Origin > How to Build a Brain > Essentials of General Intelligence: The direct path to AGI
Permanent link to this article: http://www.kurzweilai.net/meme/frame.html?main=/articles/art0513.html

Printable Version
    Essentials of General Intelligence: The direct path to AGI
by   Peter Voss

General intelligence comprises the essential, domain-independent skills necessary for acquiring a wide range of domain-specific knowledge -- the ability to learn anything. Achieving this with "artificial general intelligence" (AGI) requires a highly adaptive, general-purpose system that can autonomously acquire an extremely wide range of specific knowledge and skills and can improve its own cognitive ability through self-directed learning. This chapter in the forthcoming book, Real AI: New Approaches to Artificial General Intelligence, describes the requirements and conceptual design of a prototype AGI system.

1. Introduction

This paper explores the concept of "artificial general intelligence" (AGI) -- its nature, importance, and how best to achieve it. Our[1] theoretical model posits that general intelligence comprises a limited number of distinct, yet highly integrated, foundational functional components. Successful implementation of this model will yield a highly adaptive, general-purpose system that can autonomously acquire an extremely wide range of specific knowledge and skills. Moreover, it will be able to improve its own cognitive ability through self-directed learning. We believe that, given the right design, current hardware/ software technology is adequate for engineering practical AGI systems. Our current implementation of a functional prototype is described below.

The idea of "general intelligence" is quite controversial; I do not substantially engage this debate here but rather take the existence of such non domain-specific abilities as a given (Gottfredson 1998). It must also be noted that this essay focuses primarily on low-level (i.e. roughly animal level) cognitive ability. Higher-level functionality, while an integral part of our model, is only addressed peripherally. Finally, certain algorithmic details are omitted for reasons of proprietary ownership.

2. General Intelligence

Intelligence can be defined simply as an entity's ability to achieve goals -- with greater intelligence coping with more complex and novel situations. Complexity ranges from the trivial -- thermostats and mollusks (that in most contexts don't even justify the label "intelligence") -- ­to the fantastically complex; autonomous flight control systems and humans.

Adaptivity, the ability to deal with changing and novel requirements, also covers a wide spectrum: from rigid, narrowly domain-specific to highly flexible, general purpose. Furthermore, flexibility can be defined in terms of scope and permanence -- how much, and how often it changes. Imprinting is an example of limited scope and high permanence, while innovative, abstract problem solving is at the other end of the spectrum. While entities with high adaptivity and flexibility are clearly superior -- they can potentially learn to achieve any possible goal -- there is a hefty efficiency price to be paid: For example, had Deep Blue also been designed to learn language, direct airline traffic, and do medical diagnosis, it would not have become Chess champion (all other things being equal).

General Intelligence comprises the essential, domain-independent skills necessary for acquiring a wide range of domain-specific knowledge (data & skills) -- i.e. the ability to learn anything (in principle). More specifically, this learning ability needs to be autonomous, goal-directed, and highly adaptive:

Autonomous -- Learning occurs both automatically, through exposure to sense data (unsupervised), and through bi-directional interaction with the environment, including exploration/ experimentation (self-supervised).

Goal-directed -- Learning is directed (autonomously) towards achieving varying and novel goals and sub-goals -- be they "hard-wired," externally specified, or self-generated. Goal-directedness also implies very selective learning and data acquisition (from a massively data-rich, noisy, complex environment).

Adaptive -- Learning is cumulative, integrative, contextual and adjusts to changing goals and environments. General adaptivity not only copes with gradual changes, but also seeds and facilitates the acquisition of totally novel abilities.

General cognitive ability stands in sharp contrast to inherent specializations such as speech- or face-recognition, knowledge databases/ ontologies, expert systems, or search, regression or optimization algorithms. It allows an entity to acquire a virtually unlimited range of new specialized abilities. The mark of a generally intelligent system is not having a lot of knowledge and skills, but being able to acquire and improve them -- and to be able to appropriately apply them. Furthermore, knowledge must be acquired and stored in ways appropriate both to the nature of the data, and to the goals and tasks at hand.

For example, given the correct set of basic core capabilities, an AGI system should be able to learn to recognize and categorize a wide range of novel perceptual patterns that are acquired via different senses, in many different environments and contexts. Additionally, it should be able to autonomously learn appropriate, goal-directed responses to such input contexts (given some feedback mechanism).

We take this concept to be valid not only for high-level human intelligence, but for lower-level animal-like ability. The degree of "generality" (i.e., adaptability) varies along a continuum from genetically "hard-coded" responses (no adaptability), to high-level animal flexibility (significant learning ability as in, say, a dog), and finally to self-aware human general learning ability.

Core Requirements for General Intelligence

General intelligence, as described above, demands a number of irreducible features and capabilities. In order to proactively accumulate knowledge from various (and/ or changing) environments, it requires:

1. Senses to obtain features from "the world" (virtual or actual),

2. A coherent means for storing knowledge obtained this way, and

3. Adaptive output/ actuation mechanisms (both static and dynamic).

Such knowledge also needs to be automatically adjusted and updated on an ongoing basis; new knowledge must be appropriately related to existing data. Furthermore, perceived entities/ patterns must be stored in a way that facilitates concept formation and generalization. An effective way to represent complex feature relationships is through vector encoding (Churchland 1995).

Any practical applications of AGI (and certainly any real-time uses) must inherently be able to process temporal data as patterns in time -- not just as static patterns with a time dimension. Furthermore, AGIs must cope with data from different sense probes (e.g., visual, auditory, and data), and deal with such attributes as: noisy, scalar, unreliable, incomplete, multi-dimensional (both space/ time dimensional, and having a large number of simultaneous features), etc. Fuzzy pattern matching helps deal with pattern variability and noise.

Another essential requirement of general intelligence is to cope with an overabundance of data. Reality presents massively more features and detail than is (contextually) relevant, or that can be usefully processed. This is why the system needs to have some control over what input data is selected for analysis and learning -- both in terms of which data, and also the degree of detail. Senses ("probes") are needed not only for selection and focus, but also in order to ground concepts -- to give them (reality-based) meaning.

While input data needs to be severely limited by focus and selection, it is also extremely important to obtain multiple views of reality -- data from different feature extractors or senses. Provided that these different input patterns are properly associated, they can help to provide context for each other, aid recognition, and add meaning.

In addition to being able to sense via its multiple, adaptive input groups and probes, the AGI must also be able to act on the world -- be it for exploration, experimentation, communication, or to perform useful actions. These mechanisms need to provide both static and dynamic output (states and behavior). They too, need to be adaptive and capable of learning.

Underlying all of this functionality is pattern processing. What is more, not only are sensing and action based on generic patterns, but so is internal cognitive activity. In fact, even high-level abstract thought, language, and formal reasoning -- abilities outside the scope of our current project -- are "just" higher-order elaborations of this (Margolis 1987).

Advantages of Intelligence being General

The advantages of general intelligence are almost too obvious to merit listing; how many of us would dream of giving up our ability to adapt and learn new things? In the context of artificial intelligence this issue takes on a new significance.

There exists an inexhaustible demand for computerized systems that can assist humans in complex tasks that are highly repetitive, dangerous, or that require knowledge, senses or abilities that its users may not possess (e.g., expert knowledge, "photographic" recall, overcoming disabilities, etc.). These applications stretch across almost all domains of human endeavor.

Currently, these needs are filled primarily by systems engineered specifically for each domain and application (e.g., expert systems). Problems of cost, lead-time, reliability, and the lack of adaptability to new and unforeseen situations, severely limit market potential. Adaptive AGI technology, as described in this paper, promises to significantly reduce these limitations and to open up these markets. It specifically implies --

That systems can learn (and be taught) a wide spectrum of data and functionality

They can adapt to changing data, environments and uses/ goals

This can be achieved without program changes -- capabilities are learned, not coded.

More specifically, this technology can potentially:

Significantly reduce system "brittleness"[2] through fuzzy pattern matching and adaptive learning -- increasing robustness in the face of changing and unanticipated conditions or data.

Learn autonomously, by automatically accumulating knowledge about new environments through exploration.

Allow systems to be operator-trained to identify new objects and patterns; to respond to situations in specific ways, and to acquire new behaviors.

Eliminate programming in many applications. Systems can be employed in many different environments, and with different parameters simply through self-training.

Facilitate easy deployment in new domains. A general intelligence engine with pluggable custom input/ output probes allows rapid and inexpensive implementation of specialized applications.

From a design perspective, AGI offers the advantage that all effort can be focused on achieving the best general solutions -- solving them once, rather than once for each particular domain. AGI obviously also has huge economic implications: because AGI systems acquire most of their knowledge and skills (and adapt to changing requirements) autonomously, programming lead times and costs can be dramatically reduced, or even eliminated.

The fact that no (artificial!) systems with these capabilities currently exist seems to imply that it is very hard (or impossible) to achieve these objectives. However, I believe that, as with other examples of human discovery and invention, the solution will seem rather obvious in retrospect. The trick is correctly choosing a few critical development options.

3. Shortcuts to AGI

When explaining Artificial General Intelligence to the uninitiated one often hears the remark that, surely, everyone in AI is working to achieve general intelligence. This indicates how deeply misunderstood intelligence is. While it is true that eventually conventional (domain-specific) research efforts will converge with those of AGI, without deliberate guidance this is likely to be a long, inefficient process. High-level intelligence must be adaptive, must be general -- yet very little work is being done to specifically identify what general intelligence is, what it requires, and how to achieve it.

In addition to understanding general intelligence, AGI design also requires an appreciation of the differences between artificial (synthetic) and biological intelligence, and between designed and evolved systems.

Our particular approach to achieving AGI capitalizes on extensive analysis of these issues, and on an incremental development path that aims to minimize development effort (time and cost), technical complexity, and overall project risks. In particular, we are focusing on engineering a series of functional (but low-resolution/ capacity) proof-of-concept prototypes. Performance issues specifically related to commercialization are assigned to separate development tracks. Furthermore, our initial effort concentrates on identifying and implementing the most general and foundational components first, leaving high-level cognition such as abstract thought, language, and formal logic for later development (more on that later). We also focus more on selective, unsupervised, dynamic, incremental, interactive learning; on noisy, complex, analog data; and on integrating entity features and concept attributes in one comprehensive network.

While our project may not be the only one proceeding on this particular path, it is clear that by far the majority of AI work being done today follows a substantially different overall approach. Our work focuses on:

General rather than domain-specific cognitive ability

Acquired knowledge and skills, versus loaded databases and coded skills

Bi-directional, real-time interaction, versus batch processing

Adaptive attention (focus & selection), versus human pre-selected data

Core support for dynamic patterns, versus static data

Unsupervised and self-supervised, versus supervised learning

Adaptive, self-organizing data structures, versus fixed neural nets or databases

Contextual, grounded concepts, versus hard-coded, symbolic concepts

Explicitly engineering functionality, versus evolving it

Conceptual design, versus reverse-engineering

General proof-of-concept, versus specific real applications development

Animal level cognition, versus abstract thought, language, and formal logic.

Let's look at each of these choices in greater detail.

General rather than domain-specific cognitive ability. The advantages listed in the previous section flow from the fact that generally intelligent systems can ultimately learn any specialized knowledge and skills possible -- human intelligence is the proof! The reverse is obviously not true.

A complete, well-designed AGI's ability to acquire domain-specific capabilities is limited only by processing and storage capacity. What is more, much of its learning will be autonomous -- without teachers, and certainly without explicit programming. This approach implements (and capitalizes on) the essence of "Seed AI" -- systems with a limited, but carefully chosen set of basic, initial capabilities that allow them (in a "bootstrapping" process) to dramatically increase their knowledge and skills through self-directed learning and adaptation. By concentrating on carefully designing the seed of intelligence, and then nursing it to maturity, one essentially bootstraps intelligence. In our AGI design this self-improvement takes two distinct forms/ phases:

1. Coding the basic skills that allow the system to acquire a large amount of specific knowledge.

2. The system reaching sufficient intelligence and conceptual understanding of its own design, to enable it to deliberately improve its own design.

 Acquired knowledge and skills, versus loaded databases and coded skills. One crucial measure of general intelligence is its ability to acquire knowledge and skills, not how much it possesses. Many AI efforts concentrate on accumulating huge databases of knowledge and coding massive amounts of specific skills. If AGI is possible -- and evidence presented here and elsewhere seems overwhelming -- then much of this effort will be wasted. Not only will an AGI be able to acquire these additional smarts (largely) by itself, but moreover, it will also be able to keep its knowledge up-to-date, and to improve it. Not only will this save initial data collection and preparation as well as programming, it will also dramatically reduce maintenance.

An important feature of our design is that there are no traditional databases containing knowledge, nor programs encoding learned skills: All acquired knowledge is integrated into an adaptive central knowledge/ skills network. Patterns representing knowledge are associated in a manner that facilitates conceptualization and sensitivity to context. Naturally, such a design is potentially far less prone to brittleness, and more resiliently fault-tolerant.

Bi-directional, real-time interaction, versus batch processing. Adaptive learning systems must be able to interact bi-directionally with the environment -- virtual or real. They must both sense data and act/ react on an ongoing basis. Many AI systems do all of their learning in batch mode and have little or no ability to learn incrementally. Such systems cannot easily adjust to changing environments or requirements -- in many cases they are unable to adapt beyond the initial training set without reprogramming or retraining.

In addition to real-time perception and learning, intelligent systems must also be able to act. Three distinct areas of action capability are required:

1. Acting on the "world" -- be it to communicate, to navigate or explore, or to manipulate some external function or device in order to achieve goals.

2. Controlling or modifying the system's internal parameters (such as learning rate or noise tolerance, etc.) in order to set or improve functionality.

3. Controlling the system's sense input parameters such as focus, selection, resolution (granularity) as well as adjusting feature extraction parameters.

Adaptive attention (focus & selection), versus human pre-selected data. As mentioned earlier, reality presents far more sense data abundance, detail, and complexity than are required for any given task -- or than can be processed. Traditionally, this problem has been dealt with by carefully selecting and formatting data before feeding it to the system. While this human assistance can improve performance in specific applications, it is often not realized that this additional intelligence resides in the human, not the software.

Outside guidance and training can obviously speed learning; however, AGI systems must inherently be designed to acquire knowledge by themselves. In particular, they need to control what input data is processed -- where specifically to obtain data, in how much detail, and in what format. Absent this capability the system will either be overwhelmed by irrelevant data or, conversely, be unable to obtain crucial information, or get it in the required format. Naturally, such data focus and selection mechanisms must themselves be adaptive.

Core support for dynamic patterns, versus static data. Temporal pattern processing is another fundamental requirement of interactive intelligence. At least three aspects of AGI rely on it: perception needs to learn/ recognize dynamic entities and sequences, action usually comprises complex behavior, and cognition (internal processing) is inherently temporal. In spite of this obvious need for intrinsic support for dynamic patterns, many AI systems only process static data; temporal sequences, if supported at all, are often converted ("flattened") externally to eliminate the time dimension. Real-time temporal pattern processing is technically quite challenging, so it is not surprising that most designs try to avoid it.

Unsupervised and self-supervised, versus supervised learning. Auto-adaptive systems such as AGIs require comprehensive capabilities to learn without supervision. Such teacher-independent knowledge and skill acquisition falls into two broad categories: unsupervised (data-driven, bottom-up), and self-supervised (goal-driven, top-down). Ideally these two modes of learning should seamlessly integrate with each other -- and of course, also with other, supervised methods.

Here, as in other design choices, general adaptive systems are harder to design and tune than more specialized, unchanging ones. We see this particularly clearly in the overwhelming focus on back-propagation[3] in artificial neural network (ANN) development. Relatively little research aims at better understanding and improving incremental, autonomous learning. Our own design places heavy emphasis on these aspects.

Adaptive, self-organizing data structures, versus fixed neural nets or databases. Another core requirement imposed by data/ goal-driven, real-time learning is having a flexible, self-organizing data structure. On the one hand, knowledge representation must be highly integrated, while on the other hand it must be able to adapt to changing data densities (and other properties), and to varying goals or solutions. Our AGI encodes all acquired knowledge and skills in one integrated network-like structure. This central repository features a flexible, dynamically self-organizing topology. The vast majority of other AI designs rely either on loosely-coupled data objects or agents, or on fixed network topologies and pre-defined ontologies, data hierarchies or database layouts. This often severely limits their self-learning ability, adaptivity and robustness, or creates massive communication bottlenecks or other performance overhead.

Contextual, grounded concepts, versus hard-coded, symbolic concepts. Concepts are probably the most important design aspect of AGI; in fact, one can say that "high-level intelligence is conceptual intelligence." Core characteristics of concepts include their ability to represent ultra-high-dimensional fuzzy sets that are grounded in reality, yet fluid with regard to context. In other words, they encode related sets of complex, coherent, multi-dimensional patterns that represent features of entities. Concepts obtain their grounding (and thus their meaning) by virtue of patterns emanating from features sensed directly from entities that exist in reality. Because concepts are defined by value ranges within each feature dimension (sometimes in complex relationships), some kind of fuzzy pattern matching is essential. In addition, the scope of concepts must be fluid; they must be sensitive and adaptive to both environmental and goal contexts.

Autonomous concept formation is one of the key tests of intelligence. The many AI systems based on hard-coded or human-defined concepts fail this fundamental test. Furthermore, systems that do not derive their concepts via interactive perception are unable to ground their knowledge in reality, and thus lack crucial meaning. Finally, concept structures whose activation cannot be modulated by context and degree of fit are unable to capture the subtlety and fluidity of intelligent generalization. In combination, these limitations will cripple any aspiring AGI.

Explicitly engineering (and learning) functionality, versus evolving it. Design by evolution is extremely inefficient -- whether in nature or in computer science. Moreover, evolutionary solutions are generally opaque; optimized only to some specified "cost function," not comprehensibility, modularity, or maintainability. Furthermore, evolutionary learning also requires more data or trials than are available in everyday problem solving.

Genetic and evolutionary programming do have their uses -- they are powerful tools that can be used to solve very specific problems, such as optimization of large sets of variables; however they generally are not appropriate for creating large systems of infrastructures. Artificially evolving general intelligence directly seems particularly problematic because there is no known function measuring such capability along a single continuum -- and absent such direction, evolution doesn't know what to optimize. One approach to deal with this problem is to try to coax intelligence out of a complex ecology of competing agents -- essentially replaying natural evolution.

Overall, it seems that genetic programming techniques are appropriate when one runs out of specific engineering ideas. Here is a short summary of advantages of explicitly engineered functionality:

Designs can directly capitalize on and encode the designer's knowledge and insights.

Designs have comprehensible design documentation.

Designs can be more far more modular -- less need for multiple functionality and high inter-dependency of sub-systems than found in evolved systems.

Systems can have a more flow-chart like, logical design -- evolution has no foresight.

They can be designed with debugging aids -- evolution didn't need that.

These features combine to make systems easier to understand, debug, interface, and -- importantly -- for multiple teams to simultaneously work on the design.

Conceptual design, versus reverse-engineering. In addition to avoiding the shortcomings of evolutionary techniques, there are also numerous advantages to designing and engineering intelligent systems based on functional requirements rather than trying to copy evolution's design of the brain. As aviation has amply demonstrated, it is much easier to build planes than it is to reverse-engineer birds -- much easier to achieve flight via thrust than flapping wings.

Similarly, in creating artificial intelligence it makes sense to capitalize on our human intellectual and engineering strengths -- to ignore design parameters unique to biological systems, instead of struggling to copy nature's designs. Designs explicitly engineered to achieve desired functionality are much easier to understand, debug, modify, and enhance. Furthermore, using known and existing technology allows us to best leverage existing resources. So why limit ourselves to the single solution to intelligence created by a blind, unconscious Watchmaker with his own agenda (survival in an evolutionary environment very different from that of today)?

Intelligent machines designed from scratch carry neither the evolutionary baggage, nor the additional complexity for epigenesis, reproduction, and integrated self-repair of biological brains. Obviously this doesn't imply that we can learn nothing from studying brains, just that we don't have to limit ourselves to biological feasibility in our designs. Our (currently) only working example of high-level general intelligence (the brain) provides a crucial conceptual model of cognition, and can clearly inspire numerous specific design features.

Here are some desirable cognitive features that can be included in an AGI design that would not (and in some cases, could not) exist in a reverse-engineered brain:

More effective control of neurochemistry ("emotional states")

Selecting the appropriate degree of logical thinking versus intuition

More effective control over focus and attention

Being able to learn instantly, on demand

Direct and rapid interfacing with databases, the Internet, and other machines -- potentially having instant access to all available knowledge

Optional "photographic" memory and recall ("playback") on all senses!

Better control over remembering and forgetting (freezing important knowledge, and being able to unlearn)

The ability to accurately backtrack and review thought and decision processes (retrace and explore logic pathways)

Patterns, nodes and links can easily be tagged (labeled) and categorized

The ability to optimize the design for the available hardware instead of being forced to conform to the brain's requirements

The ability to utilize the best existing algorithms and software techniques -- irrespective of whether they are biologically plausible

Custom designed AGI (unlike brains) can have a simple speed/ capacity upgrade path

The possibility of comprehensive integration with other AI systems (like expert systems, robotics, specialized sense pre-processors, and problem solvers)

The ability to construct AGIs that are highly optimized for specific domains

Node, link, and internal parameter data is available as "input data" (full introspection)

Design specifications are available (to the designer and to the AGI itself!)

Seed AI design: A machine can inherently be designed to more easily understand and improve its own functioning -- thus bootstrapping intelligence to ever higher levels.

General proof-of-concept, versus specific real applications development. Applying given resources to minimalist proof-of-concept designs improves the likelihood of cutting a swift, direct path towards an ultimate goal. Having identified high-level artificial general intelligence as our goal, it makes little sense to squander resources on inessentials. In addition to focusing our efforts on the ability to acquire knowledge autonomously, rather than capturing or coding it, we further aim to speed progress towards full AGI by reducing cost and complexity through --

Concentrating on proof-of-concept prototypes, not commercial performance. This includes working at low data resolution and volume, and putting aside optimization. Scalability is addressed only at a theoretical level, and not necessarily implemented.

Working with radically-reduced sense and motor capabilities. The fact that deaf, blind, and severely paralyzed people can attain high intelligence (Helen Keller, Stephen Hawking) indicates that these are not essential to developing AGI.

Coping with complexity through a willingness to experiment and implement poorly understood algorithms -- i.e. using an engineering approach. Using self-tuning feedback loops to minimize free parameters.

Not being sidetracked by attempting to match the performance of domain-specific designs -- focusing more on how capabilities are achieved (e.g. learned conceptualization, instead of programmed or manually specified concepts) rather than raw performance.

Developing and testing in virtual environments, not physical implementations. Most aspects of AGI can be fully evaluated without the overhead (time, money, and complexity) of robotics.

Animal level cognition, versus abstract thought, language, and formal logic. There is ample evidence that achieving high-level cognition requires only modest structural improvements from animal capability. Discoveries in cognitive psychology point towards generalized pattern processing being the foundational mechanism for all higher level functioning. On the other hand, relatively small differences between higher animals and humans are also witnessed by studies of genetics, the evolutionary timetable, and developmental psychology.

The core challenge of AGI is achieving the robust, adaptive conceptual learning ability of higher primates or young children. If human level intelligence is the goal, then pursuing robotics, language, or formal logic (at this stage) is a costly sideshow - whether motivated by misunderstanding the problem, or by commercial or "political" considerations.

Summary. While our project leans heavily on research done in many specialized disciplines, it is one of the few efforts dedicated to integrating such interdisciplinary knowledge with the specific goal of developing general artificial intelligence. We firmly believe that many of the issues raised above are crucial to the early achievement of truly intelligent adaptive learning systems.

4. Foundational Cognitive Capabilities

General intelligence requires a number of foundational cognitive abilities. At a first approximation, it must be able to --

Remember and recognize patterns representing coherent features of reality

Relate such patterns by various similarities, differences, and associations

Learn and perform a variety of actions

Evaluate and encode feedback from a goal system

Autonomously adjust its system control parameters.

As mentioned earlier, this functionality must handle a very wide variety of data types and characteristics (including temporal), and must operate interactively, in real-time. The expanded description below is based on our particular implementation; however, the features listed would generally be required (in some form) in any implementation of artificial general intelligence.

Pattern learning, matching, completion, and recall. The primary method of pattern acquisition consists of a proprietary adaptation of lazy learning (Aha 1997, Yip 1997). Our implementation stores feature patterns (static and dynamic) with adaptive fuzzy tolerances that subsequently determine how similar patterns are processed. Our recognition algorithm matches patterns on a competitive winner-take-all basis, as a set or aggregate of similar patterns, or by forced choice. It also offers inherent support for pattern completion, and recall (where appropriate).

Data accumulation and forgetting. Because our system learns patterns incrementally, mechanism are needed for consolidating and pruning excess data. Sensed patterns (or sub-patterns) that fall within a dynamically set noise/ error tolerance of existing ones are automatically consolidated by a hebbian-like mechanism that we call "nudging." This algorithm also accumulates certain statistical information. On the other hand, patterns that turn out not to be important (as judged by various criteria) are deleted.

Categorization and clustering. Vector-coded feature patterns are acquired in real-time and stored in a highly adaptive network structure. This central self-organizing repository automatically clusters data in hyper-dimensional vector-space. Our matching algorithm's ability to recall patterns by any dimension provides inherent support for flexible, dynamic categorization. Additional categorization mechanisms facilitate grouping patterns by additional parameters, associations, or functions.

Pattern hierarchies and associations. Patterns of perceptual features do not stand in isolation -- they are derived from coherent external reality. Encoding relationships between patterns serves the crucial functions of added meaning, context, and anticipation. Our system captures low-level, perception-driven pattern associations such as: sequential or coincidental in time, nearby in space, related by feature group or sense modality. Additional relationships are encoded at higher levels of the network, including actuation layers. This overall structure somewhat resembles the "dual network" described by Goertzel (1993).

Pattern priming and activation spreading. The core function of association links is to prime[4] related nodes. This helps to disambiguate pattern matching, and to select contextual alternatives. In the case where activation is particularly strong and perceptual activity is low, stored patterns will be "recognized" spontaneously. Both the scope and decay rate of such activation spreading are controlled adaptively. These dynamics combine with the primary, perception-driven activation to form the system's short-term memory.

Action patterns. Adaptive action circuits are used to control parameters in the following three domains:

1)--Senses, including adjustable feature extractors, focus and selection mechanisms 

Output actuators for navigation and manipulation 

Meta-cognition and internal controls.

Different actions states and behaviors (action sequences) for each of these control outputs can be created at design time (using a configuration script) or acquired interactively. Real-time learning occurs either by means of explicit teaching, or autonomously through random exploration. Once acquired, these actions can be tied to specific perceptual stimuli or whole contexts through various stimulus-response mechanisms. These S-R links (both activation and inhibition) are dynamically modified through ongoing reinforcement learning.

Meta-cognitive control. In addition to adaptive perception and action functionality, an AGI design must also allow for extensive monitoring and control of overall system parameters and functions. Any complex interactive learning system contains numerous crucial control parameters such as noise tolerance, learning and exploration rates, priorities and goal management, and a myriad others. Not only must the system be able to adaptively control these many interactive vectors, it must also appropriately manage its various cognitive functions (such as recognition, recall, action, etc.). Our design deals with these requirements by means of a highly adaptive introspection/ control "probe."

High-level intelligence. Our AGI model posits that no additional foundational functions are necessary for higher-level cognition. Abstract thought, language, and logical thinking are all elaborations of core abilities. This controversial point is elaborated on further on.

5. An AGI in the making

The functional prototype currently under development at Adaptive A.I. Inc. aims to embody all the abovementioned choices, requirements, and features. Our development path is as follows:

1) Development framework

2) Memory core and interface structure

3) Individual foundational cognitive components

4) Integrated low-level cognition

5) Increasing level of functionality.

The software comprises an AGI engine framework with the following basic components:

A set of pluggable, programmable (virtual) sensors and actuators (called "probes")

A central pattern store/ engine including all data and cognitive algorithms

A configurable, dynamic 2D virtual world, plus various training and diagnostic tools.

Adaptive A.I.'s AGI Framework

The AGI engine design is based on, and embodies insights from a wide range of research in cognitive science -- including computer science, neuroscience, epistemology (Rand 1990, Kelley 1986), and psychology (Margolis 1987). Particularly strong influences include: embodied systems (Brooks 1994), vector encoded representation (Churchland 1995), adaptive self-organizing neural nets (esp. Growing Neural Gas, Fritzke 1995), unsupervised and self-supervised learning, perceptual learning (Goldstone 1998), and fuzzy logic (Kosko 1997).

While our design includes several novel, and proprietary algorithms, our key innovation is the particular selection and integration of established technologies and prior insights.

 AGI Engine Architecture & Design Features

Our AGI engine (which provides this foundational cognitive ability) can logically be divided into three parts (See figure above.):

Cognitive core

Control/ interface logic

Input/ output probes

This "situated agent architecture" reflects the importance of having an AGI system that can dynamically and adaptively interact with the environment. From a theory-of-mind perspective it acknowledges both the crucial need for concept grounding (via senses), plus the absolute need for experiential, self-supervised learning.

The components listed below have been specifically designed with features required for adaptive general intelligence in (ultimately) real environments. Among other things, they deal with a great variety and volume of static and dynamic data, cope with fuzzy and uncertain data and goals, foster coherent integrated representations of reality, and -- most of all -- promote adaptivity.

Cognitive Core: This is the central repository of all static and dynamic data patterns -- including all learned cognitive and behavioral states and sequences. All data is stored in a single, integrated node-link structure. The design innovates the specific encoding of pattern "fuzziness" (in addition to other attributes). The core allows for several node/ link types with differing dynamics to help define the network's cognitive structure.

The network's topology is dynamically self-organizing -- a feature inspired by "Growing Neural Gas" design (Fritzke 1995). This allows network density to adjust to actual data feature and/ or goal requirements. Various adaptive local and global parameters further define network structure and dynamics in real time.

Control and Interface Logic: An overall control system coordinates the network's execution cycle, drives various cognitive and housekeeping algorithms, and controls/ adapts system parameters. Via an Interface Manager, it also communicates data and control information to and from the probes.

Probes: The Interface Manager provides for dynamic addition and configuration of probes. Key design features of the probe architecture include the ability to have programmable feature extractors, variable data resolution, and focus & selection mechanisms. Such mechanisms for data selection are imperative for general intelligence: even moderately complex environments have a richness of data that far exceeds any system's ability to usefully process.

The system handles a very wide variety of data types and control signal requirements -- including those for visual, sound, and raw data (e.g., database, internet, keyboard), as well as various output actuators. A novel "system probe" provides the system with monitoring and control of its internal states (a form of meta-cognition). Additional probes -- either custom interfaces with other systems or additional real-world sensors/ actuators -- can easily be added to the system.

Development Environment/ Language/ Hardware. The complete AGI engine plus associated support programs are implemented in (Object Oriented) C# under Microsoft's .NET framework. The system is designed for optional remoting of various components, thus allowing for some distributed processing. Current tests show that practical (proof-of-concept) prototype performance can be achieved on a single, conventional PC (2 Ghz, 512 Meg). Even a non-performance-tuned implementation can process several complex patterns per second on a database of well over a million stored features.

6. From Algorithms to General Intelligence

This section covers some of our near-term research and development; it aims to illustrate our expected path toward meaningful general intelligence. While this work barely approaches higher-level animal cognition (exceeding it in some aspects, but falling far short in others such as sensory-motor skills), we take it to be a crucial step in proving the validity and practicality of our model. Furthermore, the actual functionality achieved should be highly competitive, if not unique, in applications where significant autonomous adaptivity and data selection, lack of brittleness, dynamic pattern processing, flexible actuation, and self-supervised learning are central requirements.

General intelligence doesn't comprise one single, brilliant knock-out invention or design feature; instead, it emerges from the synergetic integration of a number of essential fundamental components. On the structural side, the system must integrate sense inputs, memory, and actuators, while on the functional side various learning, recognition, recall and action capabilities must operate seamlessly on a wide range of static and dynamic patterns. In addition, these cognitive abilities must be conceptual and contextual -- they must be able to generalize knowledge, and interpret it against different backgrounds.

A key milestone in our project is testing the integrated functionality of the basic cognitive components within our overall AGI framework. A number of custom-developed, highly-configurable test utilities are used to test the cohesive functioning of the whole system. This automated training and evaluation is supplemented by manual experimentation in numerous different environments and applications. Experience gained by these tests helps to refine the complex dynamics of interacting algorithms and parameters.

One of the general difficulties with AGI development is to determine absolute measures of success. Part of the reason is that this field is still nascent, and thus no agreed definitions, let alone tests or measures of low-level general intelligence exist. As we proceed with our project we expect to develop ever more effective protocols and metrics for assessing cognitive ability. Our system's performance evaluation is guided by this description: "General intelligence comprises the ability to acquire (and adapt) the knowledge and skills required for achieving a wide range of goals in a variety of domains."

In this context, "acquisition" includes all of the following: automatic, via sense inputs (feature/ data driven); explicitly taught; discovered through exploration or experimentation; internal processes (e.g., association, categorization, statistics, etc.).

"Adaptation" implies that new knowledge is integrated appropriately.

"Knowledge and skills" refer to all kinds of data and abilities (states and behaviors) that the system acquires for the short or long term.

Our initial protocol for evaluating AGIs aims to cover a wide spectrum of domains and goals by simulating sample applications in 2D virtual worlds. In particular, these tests should assess the degree to which the foundational abilities operate as an integrated, mutually supportive whole -- and without programmer intervention! Here are three examples:

Sample Test Domains for Initial Performance Criteria

Adaptive Security Monitor. This system scans video monitors and alarm panels that oversee a secure area (say, factory, office building, etc.), and responds appropriately to abnormal conditions. Note, this is somewhat similar to a site monitoring application at MIT (Grimson 1998).

This simulation calls for a visual environment that contains a lot of detail but has only limited dynamic activity -- this is its normal state (green). Two levels of abnormality exist: (i) minor, or known disturbance (yellow); (ii) major, or unknown disturbance (red).

The system must initially learn the normal state by simple exposure (automatically scanning the environment) at different resolutions (detail). It must also learn "yellow" conditions by being shown a number of samples (some at high resolution). All other states must output "red."

Standard operation is to continuously scan the environment at low resolution. If any abnormal condition is detected the system must learn to change to higher resolution in order to discriminate between "yellow" and "red."

The system must adapt to changes in the environment (and totally different environments) by simple exposure training.

Sight Assistant. The system controls a movable "eye" (by voice command) that enables the identification (by voice output) of at least a hundred different objects in the world. A trainer will dynamically teach the system new names, associations, and eye movement commands.

The visual probe can select among different scenes (simulating rooms) and focus on different parts of each scene. The scenes depict objects of varying attributes: color, size, shape, various dynamics, etc. (and combinations of these), against different backgrounds.

Initial training will be to attach simple sound commands to maneuver the "eye," and to associate word labels with selected objects. The system must then reliably execute voice commands and respond with appropriate identification (if any). Additional functionality could be to have the system scan the various scenes when idle, and to automatically report selected important objects.

Object identification must cover a wide spectrum of different attribute combinations and tolerances. The system must easily learn new scenes, objects, words and associations, and also adapt to changes in any of these variables.

Maze Explorer. A (virtual) entity explores a moderately complex environment. It discovers what types of objects aid or hinder its objectives, while learning to navigate this dynamic world. It can also be trained to perform certain behaviors.

The virtual world is filled with a great number of different objects (see previous example). In addition, some of these objects move in space at varying speeds and dynamics, and may be solid and/ or immovable. Groups of different kinds of objects have pre-assigned attributes that indicate negative or positive. The AGI engine controls the direction and speed of an entity in this virtual world. Its goal is to learn to navigate around immovable and negative objects to reliably reach hidden positives.

The system can also be trained to respond to operator commands to perform behaviors of varying degrees of complexity (for example, actions similar to "tricks" one might teach a dog). This "Maze Explorer" can easily be set up to deal with fairly complex tasks.

Towards Increased Intelligence

Clearly, the tasks described above do not by themselves represent any kind of breakthrough in artificial intelligence research. They have been achieved many times before. However, what we do believe to be significant and unique is the achievement of these various tasks without any task-specific programming or parameterization. It is not what is being done, but how it is done.

Development beyond these basic proof-of-concept tests will advance in two directions: 1) to significantly increase resolution, data volume, and complexity in applications similar to the tests; 2) to add higher-level functionality. In addition to work aimed at further developing and proving our general intelligence model, there are also numerous practical enhancements that can be done. These would include implementing multi-processor and network versions, and integrating our system with databases or with other existing AI technology such as expert systems, voice recognition, robotics, or sense modules with specialized feature extractors.

By far the most important of these future developments concern higher-level ability. Here is a partial list of action items, all of which are derived from lower-level foundations:

Spread activation and retain context over extended period

Support more complex internal temporal patterns, both for enhanced recognition and anticipation, and for cognitive and action sequences

Internal activation feedback for processing without input

Deduction, achieved through selective concept activation

Advanced categorization by arbitrary dimensions

Learning of more complex behavior

Abstract and merged concept formation

Structured language acquisition

Increased awareness and control of internal states (introspection)

Learning logic and other problem-solving methodologies.

7. Other Research[5]

Many different approaches to AI exist; some of the differences are straight forward while others are subtle and hinge on difficult philosophical issues. As such the exact placement of our work relative to that of others is difficult and, indeed, open to debate. Our view that "intelligence is a property of an entity that engages in two way interaction with an external environment," technically puts us in the area of "agent systems" (Russel 1995). However, our emphasis on a connectionist rather than classical approach to cognitive modeling, places our work in the field of "embodied cognitive science." (See Pfeifer and Scheier 1999 for a comprehensive overview.)

While our approach is similar to other research in embodied cognitive science, in some respects our goals are substantively different. A key difference is our belief that a core set of cognitive abilities working together is sufficient to produce general intelligence. This is in marked contrast to others in embodied cognitive science who consider intelligence to be necessarily specific to a set of problems within a given environment. In other words, they believe that autonomous agents always exist in ecological niches. As such they focus their research on building very limited systems that effectively deal with only a small number of problems within a specific limited environment. Almost all work in the area follows this -- see Braitenberg (1984), Brooks (1994) or Arbib (1992) for just a few well known examples. Their stance contradicts the fact that humans possess general intelligence; we are able to effectively deal with a wide range of problems that are significantly beyond anything that could be called our "ecological niche."

Perhaps the closest project to ours that is strictly in the area of embodied cognitive science is the Cog project at MIT (Brooks 1993). The project aims to understand the dynamics of human interaction by the construction of a human-like robot complete with upper torso, a head, eyes, arms and hands. While this project is significantly more ambitious than other projects in terms of the level and complexity of the system's dynamics and abilities, the system is still essentially niche focused (elementary human social and physical interaction) when compared to our own efforts at general intelligence.

Probably the closest work to ours in the sense that it also aims to achieve general rather than niche intelligence is the Novamente project under the direction of Ben Goertzel. (The project was formerly known as Webmind -- see Goertzel 1997, 2001.) Novamente relies on a hybrid of low-level neural net-like dynamics for activation spreading and concept priming, coupled with high-level semantic constructs to represent a variety of logical, causal and spatial-temporal relations. While the semantics of the system's internal state are relatively easy to understand compared to a strictly connectionist approach, the classical elements in the system's design open the door to many of the fundamental problems that have plagued classical AI over the last fifty years. For example, high-level semantics require a complex meta-logic contained in hard coded high-level reasoning and other high-level cognitive systems. These high-level systems contain significant implicit semantics that may not be grounded in environmental interaction but are rather hard coded by the designer -- thus causing symbol grounding problems (Harnad 1990). The relatively fixed, high-level methods of knowledge representation and manipulation that this approach entails are also prone to "frame of reference" (McCarthy and Hayes 1969; Pylyshyn 1987) and "brittleness" problems. In a strictly embodied cognitive science approach, as we have taken, all knowledge is derived from agent-environment interaction thus avoiding these long-standing problems of classical AI.

--Andy Clark (1997) is another researcher whose model closely resembles our own, but there are no implementations specifically based on his theoretical work. Igor Aleksander's (now dormant) MAGNUS project (1996) also incorporated many key AGI concepts that we have identified, but it was severely limited by a classical AI, finite-state machine approach. Valeriy Nenov and Michael Dyer of UCLA (1994) used "massively" parallel hardware (a CM-2 Connection Machine) to implement a virtual, interactive perceptual design close to our own, but with a more rigid, pre-programmed structure. Unfortunately, this ambitious, ground-breaking work has since been abandoned. The project was probably severely hampered by limited (at the time) hardware.--

Moving further away from embodied cognitive science to purely classical research in general intelligence, perhaps the best known system is the Cyc project being pursued by Lenat (1990). Essentially Lenat sees general intelligence as being "common sense." He hopes to achieve this goal by adding many millions of facts about the world into a huge database. After many years of work and millions of dollars in funding there is still a long way to go as the sheer number of facts that humans know about the world is truly staggering. We doubt that a very large database of basic facts is enough to give a computer much general intelligence -- the mechanisms for autonomous knowledge acquisition are missing. Being a classical approach to AI this also suffers from the fundamental problems of classical AI listed above. For example the symbol grounding problem again: if facts about cats and dogs are just added to a database that the computer can use even though it has never seen or interacted with an animal, are those concepts really meaningful to the system? While his project also claims to pursue "general intelligence," it is really very different from our own, both in its approach and in the difficulties it faces.

Analysis of AI's ongoing failure to overcome its long-standing limitations reveals that it is not so much that Artificial General Intelligence has been tried and that it has failed, but rather that the field has largely been abandoned -- be it for theoretical, historic, or commercial reasons. Certainly, our particular type of approach, as detailed in previous sections, is receiving scant attention.

8. Fast-track AGI -- Why so Rare?

Widespread application of AI has been hampered by a number of core limitations that have plagued the field since the beginning, namely:

The expense and delay of custom programming individual applications

Systems' inability to automatically learn from experience, or to be user teachable/ trainable

Reliability and performance issues caused by "brittleness" (the inability of systems to automatically adapt to changing requirements, or data outside of a predefined range)

Their limited intelligence and common sense.

The most direct path to solving these long-standing problems is to conceptually identify the fundamental characteristics common to all high-level intelligence, and to engineer systems with this basic functionality, in a manner that capitalizes on human and technological strength.

General intelligence is the key to achieving robust autonomous systems that can learn and adapt to a wide range of uses. It is also the cornerstone of self-improving, or Seed AI -- using basic abilities to bootstrap higher-level ones. This essay identified foundational components of general intelligence, as well as crucial considerations particular to the effective development of the artificial variety. It highlighted the fact that very few researchers are actually following this most direct route to AGI.

If the approach outlined above is so promising, then why is has it received so little attention? Why is hardly anyone actually working on it?

A short answer: Of all the people working in the field called "AI":

80% don't believe in the concept of General Intelligence (but instead, in a large collection of specific skills and knowledge)

Of those that do, 80% don't believe that artificial, human-level intelligence is possible - either ever, or for a long, long time

Of those that do, 80% work on domain-specific AI projects for commercial or academic-political reasons (results are more immediate)

Of those left, 80% have a poor conceptual framework...

Even though the above is a caricature, in contains more than a grain of truth.

A great number of researchers reject the validity or importance of "general intelligence." For many, controversies in psychology (such as those stoked by The Bell Curve) make this an unpopular, if not taboo subject. Others, conditioned by decades of domain-specific work, simply do not see the benefits of Seed AI -- solving the problems only once.

Of those that do not in principle object to general intelligence, many don't believe that AGI is possible -- in their life-time, or ever. Some hold this position because they themselves tried and failed "in their youth." Others believe that AGI is not the best approach to achieving "AI," or are at a total loss on how to go about it. Very few researchers have actually studied the problem from our (the general intelligence/ Seed AI) perspective. Some are actually trying to reverse-engineer the brain -- one function at a time. There are also those who have moral objections, or who are afraid of it.

Of course, a great many are so focused on particular, narrow aspects of intelligence that they simply don't get around to looking at the big picture -- they leave it to others to make it happen. It is also important to note that there are often strong financial and institutional pressures to pursue specialized AI.

All of the above combine to create a dynamic where Real AI is not "fashionable" -- getting little respect, funding, and support -- further reducing the number of people drawn into it!

These should be more than enough reasons to account for the dearth of AGI progress. But it gets worse. Researchers actually trying to build AGI systems are further hampered by a myriad of misconceptions, poor choices, and lack of resources (funding and research). Many of the technical issues were explored previously (See sections 3 and 7.), but a few others are worth mentioning:

Epistemology. Models of AGI can only be as good as their underlying theory of knowledge -- the nature of knowledge, and how it relates to reality. The realization that high-level intelligence is based on conceptual representation of reality underpins design decisions such as adaptive, fuzzy vector encoding, and an interactive, embodied approach. Other consequences are the need for sense-based focus and selection, and contextual activation. The central importance of a highly-integrated pattern network -- especially including dynamic ones -- becomes obvious on understanding the relationship between entities, attributes, concepts, actions, and thoughts. These and several other insights lay the foundation for solving problems related to grounding, brittleness, and common sense. Finally, there is still a lot of unnecessary confusion about the relationship between concepts and symbols. A dynamic that continues to handicap AI is the lingering schism between traditionalists and connectionists. This unfortunately helps to perpetuate a false dichotomy between explicit symbols/ schema, and incomprehensible patterns.

Theory of Mind. Another area of concern is sloppy formulation and poor understanding of several key concepts: consciousness, intelligence, volition, meaning, emotions, common sense, and "qualia." The fact that hundreds of AI researchers attend conferences every year where key speakers proclaim that "we don't understand consciousness (or qualia, or whatever), and will probably never understand it' indicates just how pervasive this problem is. Marvin Minsky's characterization of consciousness being a "suitcase word"[6] is correct. Let's just unpack it!

Errors like these are often behind research going off at a tangent relative to stated long-term goals. Two examples are an undue emphasis on biological feasibility, and the belief that embodied intelligence cannot be virtual, that it has to be implemented in physical robots.

Cognitive psychology. It goes without saying that a proper understanding of the concept "intelligence" is key to engineering it. In addition to epistemology, several areas of cognitive psychology are crucial to unraveling its meaning. Misunderstanding intelligence has led to some costly disappointments, such as manually accumulating huge amounts of largely useless data (knowledge without meaning), efforts to achieve intelligence by combining masses of dumb agents, or trying to obtain meaningful conversation from an isolated network of symbols.

Project focus. The few projects that do pursue AGI based on relatively sound models run yet another risk: they can easily lose focus. Sometimes commercial considerations hijack a project's direction, while others get sidetracked by (relatively) irrelevant technical issues, such as trying to match an unrealistically high level of performance, fixating on biological feasibility of design, or attempting to implement high-level functions before their time. A clearly mapped-out developmental path to human-level intelligence can serve as a powerful antidote to losing sight of "the big picture." A vision of how to get from "here" to "there" also helps to maintain motivation in such a difficult endeavor.

Research support. AGI utilizes, or more precisely, is an integration of a large number of existing AI technologies. Unfortunately, many of the most crucial areas are sadly under-researched. They include:

Incremental, real-time, unsupervised/ self-supervised learning (vs. back-propagation)

Integrated support for temporal patterns

Dynamically-adaptive neural network topologies

Self-tuning of system parameters, integrating bottom-up (data driven) and top-down (goal/ meta-cognition driven) auto-adaptation

Sense probes with auto-adaptive feature extractors.

Naturally, these very limitations feed back to reduce support for AGI research.

Cost and difficulty. Achieving high-level AGI will be hard. However, it will not be nearly as difficult as most experts think. A key element of "Real AI" theory (and its implementation) is to concentrate on the essentials of intelligence. Seed AI becomes a manageable problem -- in some respects much simpler than other mainstream AI goals - by eliminating huge areas of difficult, but inessential AI complexity. Once we get the crucial fundamental functionality working, much of the additional "intelligence" (ability) required is taught or learned, not programmed. Having said this, I do believe that very substantial resources will be required to scale up the system to human-level storage and processing capacity. However, the far more moderate initial prototypes will serve as proof-of-concept for AGI while potentially seeding a large number of practical new applications.

9. Conclusion

Understanding general intelligence and identifying its essential components are key to building next-generation AI systems -- systems that are far less expensive, yet significantly more capable. In addition to concentrating on general learning abilities, a fast-track approach should also seek a path of least resistance -- one that capitalizes on human engineering strengths and available technology. Sometimes, this involves selecting the AI road less traveled.

We believe that the theoretical model, cognitive components, and framework described above, joined with our other strategic design decisions provide a solid basis for achieving practical AGI capabilities in the foreseeable future. Successful implementation will significantly address many traditional problems of AI. Potential benefits include:

Minimizing initial environment-specific programming (through self-adaptive configuration)

Substantially reducing ongoing software changes, because a large amount of additional functionality and knowledge will be acquired autonomously via self-supervised learning

Greatly increasing the scope of applications, as users teach and train additional capabilities

Improved flexibility and robustness resulting from systems' ability to adapt to changing data patterns, environments and goals.

AGI promises to make an important contribution toward realizing software and robotic systems that are more usable, intelligent, and human-friendly. The time seems ripe for a major initiative down this new path of human advancement that is now open to us.

To be published in the forthcoming book, Real AI: New Approaches to Artificial General Intelligence. Reproduced with permission. See Essentials of General Intelligence: The direct path to AGI for updates.


Aha, D.W. (Ed.) (1997). Lazy Learning. Artificial Intelligence Review,11:1-5 Kluwer Academic Publishers

Aleksander, I. (1996). Impossible Minds. Imperial College Press

Arbib, M.A. (1992). Schema theory. In S. C. Shapiro (Ed.), Encyclopedia of Artificial Intelligence, 2nd ed (pp. 1427-1443).  John Wiley.

Braitenberg, V. (1984). Vehicles: Experiments in synthetic psychology. MIT Press.

Brooks, R.A., and Stein, L. A. (1993). Building brains for bodies. Memo 1439, Artificial Intelligence Lab, Massachusetts Institute of Technology

Brooks, R.A. (1994). Coherent behavior from many adaptive processes. In D. Cliff, P. Husbands, J.A. Meyer, and S.W. Wilson (Eds.), From animals to animats: Proceedings of the third International Conference on Simulation of Adaptive Behavior (421-430).MIT Press.

Churchland, P.M. (1995). The Engine of Reason, the Seat of the Soul: A Philosophical Journey into the Brain. MIT Press

Clark, A. (1997. Being There: Putting Brain, Body and World Together Again. MIT Press

Fritzke, B. (1995). A growing neural gas network learns topologies. In Tesauro, G., Touretzky, D. S., and Leen, T. K. (Eds.), Advances in Neural Information Processing Systems 7 (pp. 625-632). MIT Press.

Goertzel, B. (1997). From complexity to creativity: Explorations in evolutionary, autopoietic, and cognitive dynamics.  Plenum Press.

Goertzel, B. (2001). Creating internet intelligence: Wild computing, distributed digital consciousness, and the emerging global brain Plenum Press.

Goldstone, R.L. (1998). Perceptual Learning. Annual Review of Psychology, 49, 585-612.

Gottfredson, L.S. (1998). The general intelligence factor. [Special Issue]. Scientific American, 9(4), 2, 24-29.

Grimson, W.E.L., Stauffer, C., Lee L., Romano R. (1998). Using Adaptive Tracking to Classify and Monitor Activities in a Site. Proc. IEEE Conf. on Computer Vision and Pattern Recognition, pp. 22-31, 1998

Harnad, S. (1990). The symbol grounding problem. Physica D, 42, 335-346.

Kelley, D. (1986). The Evidence of the Senses Louisiana State University Press

Kosko, B. (1997). Fuzzy Engineering.  Prentice Hall

Lenat, D.B., Guha, R.V.(1990). Building Large Knowledge Based Systems. Addison-Wesley.

Margolis, H. (1987). Patterns, Thinking, and Cognition: A Theory of Judgment. University of Chicago Press

McCarthy, J. and Hayes, P.J.(1969).  Some philosophical problems from the standpoint of artificial intelligence. Machine Intelligence, 4, 463-502.

Nenov, V.I. and Dyer, M.G. (1994). Language Learning via Perceptual/ Motor Association: A Massively Parallel Model. In: Kitano, H., Hendler, J.A. (Eds.), Massively Parallel Artificial Intelligence (pp. 203-245) AAAI Press/The MIT Press.

Pfeifer, R., and Scheier, C. (1999). Understanding intelligence. MIT Press.

Pylyshyn, Z.W.(Ed.)(1987). The Robot's Dilemma: The frame problem in A.I..  Ablex.

Rand, A. (1990). Introduction to Objectivist Epistemology. Meridian

Russell, S.J., Norvig, P.(1995). Artificial Intelligence: A modern approach. Prentice Hall.

Wang, P. (1995). Non-axiomatic reasoning system: Exploring the essence of intelligence. PhD thesis, Indiana University.

Yip, K., and Sussman, G.J. (1997). Sparse Representations for Fast, One-shot learningProc. of National Conference on Artificial Intelligence, July 1997.



[1] Intellectual property is owned by Adaptive A.I. Inc.

[2] "Brittleness" in AI refers to a system's inability to automatically adapt to changing requirements, or to cope with data outside of a predefined range -- thus "breaking."

[3] Back-propagation is one of the most powerful supervised training algorithms; it is, however, not particularly amenable to incremental learning.

[4] "Priming," as used in psychology, refers to an increase in the speed or accuracy of a decision that occurs as a consequence of prior exposure or activation.

[5] This section was co-authored with Shane Legg

[6] meaning that many different meanings are thrown together in a jumble -- or at least packaged together in one "box," under one label.

 Join the discussion about this article on Mind·X!


   [Post New Comment]
Mind·X Discussion About This Article:

AGI Machine
posted on 08/23/2002 5:18 PM by St_Automatos@canada.com

[Reply to this post]

Select one scenario in which the AGI Machine would be functioning as an AGI which would exemplify that it is a real THINKING MACHINE.
It doesn't even have to be a highly complex situation-could be quite simple.

St Automatos

Re: AGI Machine
posted on 08/26/2002 7:08 PM by azb@llnl.gov

[Reply to this post]

St Automatos,

It is difficult to imagine a particular scenario. The attempt to create a "purist AGI machine", would need to resist "teaching it" too much, like an understanding of natural language. That would ba a "short-cut" (in order to "interact" with it on less than a child-like level), but would involve so much "in-depth" assumptions about the multiple meanings behind human words that it would obscure (and taint) any claimed "natural learning" ability that might be demonstrated.

If done "well", it might be like dealing with a small child or infant. It would need to learn language and "acceptable behaviors" by interacting with the world. Clearly, it would need access to "sensory" inputs (sight, sound, etc) and also the physical ability to "act out" and experiment.

If it reached the point of understanding spoken or written language (without simply being spoon-feed every word and concept), and were then released into a library containing "unfamiliar works" (and words), and it emerged with the ability to carry on a meaningful conversation about some of those works, then we would have something indeed.

But that is not a "simple demonstration", and your point (I believe) was to try to identify some "minimalist evidence" that a given AGI was "succeeding".

Cheers! ____tony b____

Re: AGI Machine
posted on 08/27/2002 3:36 AM by rws1st@yahoo.com

[Reply to this post]

Allow me to offer a working definition of general intelligence (borrowed from Shane Legg).

General Intelligence is the ability to solve a wide range of problems over a wide range of contexts. The range of problems itself will be in part a measure of the level of complexity of the problems you can solve, as there as just so many simple problems that are possible. The range of context is a measure in part of your ability to solve the fundamental problems under different circumstances, and so acts as a measure of ones ability to abstract. Adding in Adaptive would mean that the system was not fixed in the range or contexts of its problem set.

The problem then, given your question, is to create “one scenario” that can test such a thing. And unless the scenario is very complex, to the point that in includes a number of problems in a number of contexts then by my definition it just won’t be able to show AGI.

So now that I have shot your question down, let me give a single scenario that I use as a metal model. I will call it “Dog fetch toy.” Dogs are able to recognize a wide number of objects as toys, and are able to locate those toys in a wide range of environment, even when the toy is partially covered or altered in some way. This model stresses the different context part of the definition fairly well, while not doing a very good job of pushing on the range of problems. On the other hand it is an example that does not require human level of intelligence or specifically abstraction ability, but none the less is beyond the capacity of current technology. (at least as that I know of…If someone knows of an artificial system that could do this I would be very interested to learn of it) The problem also has the adaptive feature that dogs are able to learn new toys and new environments.

Robert Sperry
A2i2 Adaptive A.I. Inc

Re: AGI Machine
posted on 08/27/2002 6:29 PM by azb@llnl.gov

[Reply to this post]


I like "Dog Fetch Toy". It is "simple", yet highlights the difficulties faced by a robotic system whose highest-levels of "cognizance" are (initially) a raw AGI.

Such a "dog" would already need raw visual, tactile, and motor capability, while beginning with no idea of "toy", or "walk/run" etc.

I am reminded of the work depicted in a Scientific American article about (10?) years back. I don't recall the researcher's name, but he was builing robotic insects (ant-like) that has to "learn" how to walk on their own.

In this limited realm, the "brain" was a very simple process that would give (or relay) a command to "move forward" or "move right" to its "legs-complex", while maintaining a sensor that could determine if and when the desired motion was occuring. It would constantly give feedback to the legs regarding its satisfaction (or lack of satisfaction) with the progress being made".

The "legs" would begin (initially random) attempts as movement, correlating their selection of motion with that of nearby-leg-selections and the "good-bad" feedback from the "brain". Before very long, the six-legged "ant" developed an effective walking gait identical to that of real ants, and could respond almost instantly to effect the desired motion.

The challenge of AGI is to generalize that type of "ant-brain", or to create a hierarchy of ever-less-specific AGI nodes, with the least-specific nodes "at the top". To "fetch the toy", the dog-AGI must (effectively) issue high-level directives that are interpreted by a "lower-brain" AGI responsible for overall leg-coordination, whose "desires" are in turn interpreted by an AGI for each leg that serves to coordinate leg-joint activities. Meanwhile, the same dog-AGI desire to "fetch" must be interpreted by the visual-management-AGI, coordinating eye-direction AGIs, object-identification AGIs, etc.

And all of this must begin with a dog-AGI that known not how to walk, how to correlate image movement to body/eye/object movement, etc.

Quite the challenge. I wonder why I have not heard of great strides or advancements in the robo-insect "bottom-up learning" systems or hierarchies.

Cheers! ____tony b____

Re: AGI Machine
posted on 08/28/2002 9:37 AM by wclary5424@aol.com

[Reply to this post]

>I wonder why I have not heard of great strides or advancements in the robo-insect "bottom-up learning" systems or hierarchies.

Perhaps because there is no consequence for failure of the robots to learn...no equivalent of natural selection.


Re: AGI Machine
posted on 08/28/2002 4:20 PM by azb@llnl.gov

[Reply to this post]


> >"I wonder why I have not heard of great strides or advancements in the robo-insect "bottom-up learning" systems or hierarchies."

> "Perhaps because there is no consequence for failure of the robots to learn...no equivalent of natural selection."

True, but I was not intending to go so far as to expect (at this stage) that robo-ants should variably reproduce in an environment where natural selection rewards the "better adapted".

Rather, I look to how the robo-ant-system was designed, with no built-in rules about how to walk, but rather the ability of each "leg" to correlate its behaviors to nearby legs and to some global "satisfaction/dissatisfaction" signal, that signal coming from a "brain" that also has no idea about how to make legs "walk", and remains ignorant of this even after successful walking occurs. It is almost the antithesis of the classic "top-down AI", which one envisions "knowing how to perform every task", as in "now, lift legs 1,3,5, now 2,4,6", etc.

It seems to be a more natural architecture, whose success (in the robo-ant walking example) could have been extended to other "problem domains".

The "Artificial General Intelligence" (AGI) effort, although quite "distinct" from the more narrow-domain designs of AI (dedicated expert systems, etc.,) still allows for a variety of architectures to be deployed initially. The most "common theme" I get from most AI (and even AGI) efforts involves a vision of "master thread of serial control" to which all other processes are not only subordinate, but effectively detailed. The vision tends to suggest a one-great-AGI-process that does all the "learning" and generates all the answers or directives. I doubt that our human intelligence actually works that way, and I wonder how an "AGI-machine" might be architected more along the lines suggested by the robo-ant example.

If one follows the former vision, the "one-AGI" must be exceedingly broad and capable, effectively able to "learn everything eventually", while the latter vision affords the "top-AGI" to deal more exclusively with higher-level issues, effectively ignorant of the "how" of loosely subordinate AGIs that "specialize themselves" to various supporting roles. Thus, all of the AGIs that make up this "brain" might be simpler individual implementations. Even the "top-AGI" is as simple as the "toe-wiggling" AGI, just differently tasked and specialized.

Cheers! ____tony b____

Re: AGI Machine
posted on 08/28/2002 5:06 PM by wclary5424@aol.com

[Reply to this post]


I guess I didn't make myself clear enough, or perhaps I misread your original post. You and I are actually in agreement. This bottom-up approach makes a lot more sense to me than the standardized approach.


Re: AGI Machine
posted on 12/23/2002 2:26 AM by ArtIntell

[Reply to this post]

I read about some research done several years ago regarding the sounds that babies make. It seems that all babies all over the world make the same group of sounds, initially, immediately following birth. That, of course, changes over time as each individual baby begins to learn to produce the sounds associated with its own surrounding environment. We wouldn't need to have an AGI recite the Pledge of Allegiance. But, if we could get an AGI to progress, on its own, from its own initial sounds to perhaps say, "Mama" it would give us some indication that we were proceeding in the correct direction. This seems to me like it's a do-able thing. "Simple", yet robust enough to prove the point.

Re: Essentials of General Intelligence: The direct path to AGI
posted on 08/26/2002 3:29 PM by shyone0202@aol.com

[Reply to this post]

<<For example, had Deep Blue also been designed to learn language, direct airline traffic, and do medical diagnosis, it would not have become Chess champion (all other things being equal).>>

Had Deep Blue's human opponent also been required to learn those things, he probably would not have become the World Chess champion, either (all other things being equal).

Re: Essentials of General Intelligence: The direct path to AGI
posted on 08/26/2002 6:55 PM by azb@llnl.gov

[Reply to this post]


True. But if Gary Kasparov was asked today to become a medical technician, or to manage airline schedules, or a thousand other tasks (and he agreed), I imagine within a few years he might be quite proficient.

Try asking the same of Deep Blue. It could not even process the request.

That machine is dedicated to a very narrow realm of behavior, and about as far from and AGI as one can get. I doubt it can even reveal whether the move you make is "clever" or "obvious". It simply generates the best responding chess move.

Cheers! ____tony b____

Re: Essentials of General Intelligence: The direct path to AGI
posted on 12/23/2002 5:54 PM by ArtIntell

[Reply to this post]

AGI Review Notes
- Dennis Birney

The following are my review notes of "Essentials of General Intelligence: The direct path to AGI" by Peter Voss.

Most cogent, pragmatistic, computer systems engineering approach to creating Artificial Intelligence I have seen in 20 years of research. I am reminded of a pertinent quote attributed to Henry Ford, "If you think you can, you're right. If you think you can't, you're right." I would be honored if I were allowed to sweep the floor.

Permit me a few minor observations.

"General Intelligence comprises the essential, domain-independent skills necessary for acquiring a wide range of domain-specific knowledge (data & skills) -- i.e., the ability to learn anything (in principle). More specifically, this learning ability needs to be autonomous, goal-directed, and highly adaptive:

Autonomous -- …

Goal-directed -- Learning is directed (autonomously) towards achieving varying and novel goals and sub-goals -- be they "hard-wired," externally specified, or self-generated. Goal-directedness also implies very selective learning and data acquisition (from a massively data-rich, noisy, complex environment.)"

I may be misinterpreting the use of the concept of "goal_directed" but I believe that dealing with goals such as identifying, prioritizing, and taking the necessary steps to achieve, is learned behavior. If "goals" are hardwired it seems this becomes contrary to the concept of Autonomous.

"Furthermore, knowledge must be acquired and stored in ways appropriate both to the nature of the data, and to the goals and tasks at hand."

It's one thing to store data with the intent to recall the correct piece(s) in response to a query but something entirely different to autonomously recall the potentially correct piece(s) of data to creatively/innovatively solve a particular dilemma. There should be storage considerations regarding the relationship usage relative to the current focus, i.e., if I'm trying to complete a sentence relating to a particular aspect of artificial intelligence it would be of no use to recall items needed to bake a pumpkin pie. Some kind of contextual relationship is apparently necessary.

"Such knowledge also needs to be automatically adjusted and updated on an ongoing basis; new knowledge must be appropriately related to existing data."

At one point in time this was the theory of what humans do during their sleep period.

"Furthermore, perceived entities/patterns must be stored in a way that facilitates concept formation and generalization."

Some humans are better at this than others.

"Another essential requirement of general intelligence is to cope with an overabundance of data. Reality presents massively more features and detail than is (contextually) relevant, or that can be usefully processed. This is why the system needs to have some control over what input data is selected for analysis and learning -- both in terms of which data, and also the degree of detail. Senses ("probes") are needed not only for selection and focus, but also in order to ground concepts -- to give them (reality-based) meaning."

This sounds like some kind of dynamic filtering process is needed.

"While input data needs to be severely limited by focus and selection, it is also extremely important to obtain multiple views of reality -- data from different feature extractors or senses. Provided that these different input patterns are properly associated, they can help to provide context for each other, aid recognition, and add meaning."

What if we approach the subject from the direction of emulating a blind, quadriplegic and add sight and extremity sensors later?

"From a design perspective, AGI offers the advantage that all effort can be focused on achieving the best general solutions -- solving them once, rather than once for each particular domain."

Problem: one general solution cannot fix all seemingly related problems. Let's not "reinvent in the wheel" but, sometimes, reinventing the wheel leads to a better solution. Better -- the enemy of good!

"AGI obviously also has huge economic implications: because AGI systems acquire most of their knowledge and skills (and adapt to changing requirements) autonomously, programmed lead times and costs can be dramatically reduced, or even eliminated."

On the surface this seems to be true. However, let's not throw the baby out with the bath water! Necessary time is required to acquire knowledge and skills and adapt.

This sounds like the most fun project ever! Where do I sign up?

Re: Essentials of General Intelligence: The direct path to AGI
posted on 07/06/2004 2:56 PM by Bradski

[Reply to this post]

I guess Voss et al are still at this in LA:
I wish them luck, or that someone will get it right.

I wonder whether intelligence can be separated from development? That is, the very act(s) of having to learn to move, to see, to fear, to feed etc form the scaffolding of later thought. This is the theme of George Lakoff and Mark Johnson in their book, “Metaphors We Live By”, later expanded in “Philosophy In The Flesh”, Basic Books, 1999. That is, our higher thinking is largely metaphoric – for example, “ideas” are objects that can be “seen”, “grasped”, dissected etc. As a baby, you understood something by seeing it and grasping this and we carry this metaphor over to ideas. Thus, it is by our embedded body experience that later symbols are grounded, and by these means that we generalize thought or feel that we understand something…it also provides limitations to our thought in the places where our metaphors break down such as quantum phenomena where it might be that a future robot with nano fingers may well have good intuitions in that realm that we cannot access … or readily understand even if said robot were to try to communicate this information to us.

There is an institute at Berkeley, CA trying to meld such ideas with biological data and turn this into computational models: http://www.icsi.berkeley.edu/NTL/overview.html, though I haven’t really investigated their work…yet.

The other thing I might have missed is that our brain makes extensive use of spatial maps – motor maps, visual maps, tactile maps. My guess is that this is not just an accidental bio-byproduct, but that maps allow generalization – you don’t need to experience all parts of a control space if you can linearly interpolate between points for example. I don’t really see that being covered here.

My $0.02.


Re: Essentials of General Intelligence: The direct path to AGI
posted on 07/06/2004 9:53 PM by claireatcthisspace

[Reply to this post]

your 2 cents are well accepted,

"it also provides limitations to our thought in the places where our metaphors break down such as quantum phenomena where it might be that a future robot with nano fingers may well have good intuitions in that realm that we cannot access … or readily understand even if said robot were to try to communicate this information to us."

Is a step foward. It's allways usefull to move ahead form pre assumed ideas. Another example is matter and its uique finite qualities along its infinite qualities. Symbiosis.


Re: Essentials of General Intelligence: The direct path to AGI
posted on 07/06/2004 10:14 PM by claireatcthisspace

[Reply to this post]

"The other thing I might have missed is that our brain makes extensive use of spatial maps – motor maps, visual maps, tactile maps. My guess is that this is not just an accidental bio-byproduct, but that maps allow generalization – you don’t need to experience all parts of a control space if you can linearly interpolate between points for example. I don’t really see that being covered here. "

can you explain this in more detail? because I am very interested.


Re: Essentials of General Intelligence: The direct path to AGI
posted on 07/07/2004 3:21 AM by Bradski

[Reply to this post]

The other thing I might have missed is that our brain makes extensive use of spatial maps – motor maps, visual maps, tactile maps...

can you explain this in more detail? because I am very interested.

The brain maps your body’s sensory inputs and puts them “face to face” with motor control outputs as shown in this diagram of the sensory-motor homunculus.
http://www.wirescript.net/magazine/lv9901/lvfig5.j pg
Note that more area/processing power/detail is given to important areas like the hand and mouth. If you were to make a model of how the body is computationally represented, it would look something like:
http://anatomy.yonsei.ac.kr/LWT/images/Homunculus. JPG
Pretty, isn’t it?

Similarly auditory and visual signals are converted into 2D spatial maps. Our brain is really a 2D computational device – you can think of the cerebral cortex as a crumpled sheet of paper stuffed into our skull. These map areas are then connected with a level of indirection through the thalamus – a smaller “crumpled piece of paper” in the middle. Why 2D maps and not 3D (or higher)? My guess is that no matter the data set, one can always map the “affinity” (sameness) of any given data point to any other and this can be represented in a 2D structure. What good are maps? If I can lay out my sensory, control, visual or auditory space in a consistent fashion so that near points are physically near, and far points far. Then, if I learn how to reach to point A and later learn to reach to point C, I can probably just interpolate between A and C and do pretty good at reaching point B. But even more important, since I can’t physically represent all of space in infinite detail, I’m going to need to interpolate anyhow to reach between physically represented points. That is, maps allow generalization and interpolation.

This brings up lots of other issues that aren’t often discussed in robotics – a chief one being that our brains and presumably successful robotic brains in the future are premised upon stability. The mappings you create stay the same for long periods of time. People often try to register things through SLAM (Simultaneous Localization and Mapping) where you are always trying to recognize where you are…but this is like some horrific stroke victim. The stability should be built in as a primitive – part of the substrate. This is what allows you to make computational maps – signals that are highly correlated in behavior are physically close together for example.

Anyhow, these are some of my initial thoughts as I prepare to turn my research to robotics next year.


Re: Essentials of General Intelligence: The direct path to AGI
posted on 07/07/2004 2:31 PM by claireatcthisspace

[Reply to this post]


I'll have athink about this post and pehaps reply later. Good luck with your research!


Re: Essentials of General Intelligence: The direct path to AGI
posted on 02/28/2004 1:48 PM by bobcoop

[Reply to this post]

I appreciate your paper giving a review of the field. I was impressed with the scope and the new concepts since I last explored this area. I would like to add some points to ponder.

1. On memory learning and forgetting. I think deleting memory for forgetting is counterproductive. Another approach might be more useful. If each time a piece of memory was accessed and proved useful, an access parameter would be incremented. Each time a piece of memory was accessed and not useful, a fraction of the access parameter would be decremented. Then in the future only memories with high access parameter values would be accessed first and memories with lower access parameter values would be accessed only if the solution was not found with the high access parameter information. This would speed access to the memories that were more useful but would allow slower access to not as useful on a daily basis memories when needed.

2. I think in order to be realistic, a general intelegent machine must have a limited number of inputs. This would limit the number of rules that would have to be created for each expert system implemented. The scope of the project must be limited to be useful. This in no way limits the scope of problems it could work upon, only the amount of data for each task. Do you need aural data to solve a shape problem? (Only in very specialized cercumstances.)

3. Everyone believes that the amount of knowledge that a general expert system must have is huge and this is why people think that it is impossible to do. If there was a general interface that everybody aggreed to and everybody working on their narrow piece of AI could make their info available through this interface, then the scope of the problem could be reduced substantially. Your area of tying all these expert systems together would be the new area of research. This should be a goal of the government and the scientific fallout would be very valuable for the country.

Cognitive Architecture for AGI
posted on 07/07/2004 10:41 AM by Mentifex

[Reply to this post]

An Artificial General Intelligence (AGI) needs a Cognitive Architecture.

http://mind.sourceforge.net/aisteps.html#aitree is the

Alife main artificial intelligence loop calling mind-modules:
enBoot English Bootstrap module for pre-loading concepts
Security module for the Joint Stewardship of Earth
--- HCI (Human-Computer Interaction)
--- Rejuvenate module for cyborg immortality
--- psiDecay concept-deactivation module
--- Ego self-assertion module
Sensorium for input into sensory memory channels
--- Audition module for the sense of hearing in robots
--- --- Listen for event-driven perception of input
--- --- --- audSTM (auditory Short Term Memory)
--- --- --- --- audRecog for auditory Recognition
--- --- oldConcept for recognition of known concepts
--- --- --- Parser module for language comprehension
--- --- --- --- Instantiate for each new instance of a concept
--- --- --- Activate for reactivation of old concepts
--- --- --- --- spreadAct for spreading activation among concepts
--- --- newConcept for machine learning of new concepts
--- --- --- enVocab module for English vocabulary
--- --- --- Parser module for language comprehension
--- --- --- --- Instantiate for each new instance of a concept
Emotion module for the sensation of feelings in robots as persons
--- Cognitive component
--- --- Physiological component
Think module for thinking by means of a linguistic superstructure
--- Activate module for activating concepts in the Psi mindcore
--- --- spreadAct module for spreading activation
--- English as one of many languages for a robot to think in
--- --- Ask module for asking questions about novel concepts
--- --- --- wtAuxSDo (whatDoSubjectsDo?)
--- --- --- --- Speech output of verbal thought
--- --- --- --- --- Reentry for hearing oneself think
--- --- negSVO for Chomskyan negative transformations
--- --- --- auxVerb for auxiliary verbs in negation
--- --- --- --- Speech output of verbal thought
--- --- --- --- --- Reentry output back into mind
--- --- SVO (Subject+Verb+Object)
--- --- --- nounPhrase for thinking of subjects in a syntax tree
--- --- --- --- Reify -- conversion of concepts to words
--- --- --- --- Speech output of verbal thought
--- --- --- --- --- Reentry of output into memory
--- --- --- --- Activate for activating concepts
--- --- --- --- --- spreadAct for spreading activation
--- --- --- verbPhrase for thinking of verbs in a syntax tree
--- --- --- --- Reify -- conversion of concepts to words
--- --- --- --- Speech output of verbal thought
--- --- --- --- --- Reentry of output as input
--- --- --- --- nounPhrase for thinking of a direct object
--- --- --- Conjoin module for thinking with conjunctions
--- --- --- --- Speech output of verbal thought
--- --- --- --- --- Reentry mental self-perception
Volition module for free will in autonomous mobile robots
Motorium module for actuators in lieu of human muscles

http://isbn.nu/0595654371 = ISBN of hardbound AI4U textbook
http://isbn.nu/0595259227 = ISBN of paperback AI4U textbook
http://pub.ufasta.edu.ar/ohcop/curso2003/27-Activi dad12.ppt
http://www.amazon.com/exec/obidos/ASIN/0595654371/ reviewed

Re: Cognitive Architecture for AGI
posted on 08/16/2005 12:49 PM by eldras

[Reply to this post]

If you reverse engineer the human brain, you will end up with a human .... without a body....trapped in a machine.

Re: Cognitive Architecture for AGI
posted on 03/29/2007 10:03 AM by jurgen

[Reply to this post]

Not correct because the brain is the body.

Re: Essentials of General Intelligence: The direct path to AGI
posted on 03/29/2007 12:56 PM by extrasense

[Reply to this post]

This is a good one. Actually, a very good high level view. It has a real chance to evolve into practical SAI / AGI.


Re: Essentials of General Intelligence: The direct path to AGI
posted on 04/19/2007 5:49 PM by MikeSar

[Reply to this post]

4. Foundational Cognitive Capabilities

I was happily surprised to read the above.
Following an entirely different approach, closer to Aristotle than AI, I arrived at the conclusion that the key to simulate the brain is the use of Categories.
All beings have a list of Categories and those with a Category in common share something important, even essential.
The other adjunct is Accidents. The "accidental" details that specialize the Category for each being that may, or may not, be shared with others with category in common. Go forward!