The Talking Heads experiment: Origins of words and meanings
Luc Steels
The Talking Heads experiment: Origins of words and meanings
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The Talking Heads Experiment, conducted in the years 1999-2001, was the first large-scale experiment in which open populations of situated embodied agents created for the first time ever a new shared vocabulary by playing language games about real world scenes in front of them.



The agents could teleport to different physical sites in the world through the Internet. Sites, in Antwerp, Brussels, Paris, Tokyo, London, Cambridge and several other locations were linked into the network. Humans could interact with the robotic agents either on site or remotely through the Internet and thus influence the evolving ontologies and languages of the artificial agents.


The present book describes in detail the motivation, the cognitive mechanisms used by the agents, the various installations of the Talking Heads, the experimental results that were obtained, and the interaction with humans. It also provides a perspective on what happened in the field after these initial groundbreaking experiments. The book is invaluable reading for anyone interested in the history of agent-based models of language evolution and the future of Artificial Intelligence.



Print editions available via Language Science Press.

Language
English
ISBN
978-3-944675-42-8
Preface
The 1999 Talking Heads book
Introduction
The Talking Heads experiment
The main hypotheses
A bottom-up approach to artificial intelligence
History of the project
Beyond Turing
The book
Preview
The main components
Teleporting
The robots
The agents
Interactivity
The Guessing Game
Rules of the game
Nature of the game
The semiotic square
Processes involved in language communication
Knowledge sources and competences
Perception and categorisation
Scene and topic selection
Sensory channels
Making distinctions
Lexicalisation
Same meaning, same referent
A new word
Competition between words
Disambiguation
Same meaning, different referent
Situated grounded semantics
The origins of grammar
Conclusions
Perception
What sensors sense
Artificial sensors and actuators
Natural sensing
Behaviours
Segmentation
Feature extraction
Divergent perception
The sieve architecture
Sensory channels
Example channels
Conceptual spaces
Perceptual constancy
Transformations
Scaling
Saliency
Methodology
Putting up scaffolds
Idealisation and realism
The geom world
Conclusions
The Discrimination Game
The paradoxes of meaning
The empiricist's stance
The rationalist's stance
Arguments for and against rationalism
Arguments for and against empiricism
Selectionism
Principles of selectionism
Selectionist cognitive systems
The tree metaphor
Deriving new sensory channels
Comparing approaches
Discrimination trees
Making distinctions
Categorisers
The Discrimination Game
The Pachinko machine
Competition between categories
Variations on discrimination
The Discrimination Game in action
The importance of scaling and saliency
Combinations of categories
A real world scene
An ecology of distinctions
Growth dynamics
Pruning dynamics
Average discriminatory success and repertoire size
Adaptivity in categorisation
Real world scenes
Conclusions
The Naming Game
Inventing a lexicon
Representing lexical associations
Updating the score
Constructing and acquiring words
The Naming Game in action
Characterising the lexicon
Monitoring
Measuring lexical coherence
Scaling up
Coping with new meanings
Lexicon acquisition by virgin agents
Preservation in changing populations
Self-organisation
Winner-take-all processes
Collective behaviour and self-organisation
Increasing-returns economics
Lessons from nature
Lexical dynamics
Spatially distributed naming games
Language contact
Conclusions
The Guessing Game
Defining the Guessing Game
Example of a coupled game
Input-output coupling
Updating the scores
Repair processes
Synonymy
Ambiguity
How words may still get the same meaning
How words get different meanings
Competition between word meanings
Lexical and ontological development
Scaling up
Increasing the population size
Lexicon acquisition by new agents
Conclusions
Grounding
A first grounding experiment
Integrating perception and action
Concept acquisition
Generalisation without learning
The influence of the environment
Coping with perceptual anomalies
Semiotic dynamics
Tracking language evolution
Semiotic landscapes
Competition diagrams
RMF coherence
The ideal language
Total coherence
Communicative success despite incoherence
Damping synonymy and ambiguity
The story of fepi
The story of xu
The entry of O3
Rousseau's paradox
Universality versus relativism
Ontological coherence
Conclusions
Installations and experiments
The first series (1999)
The Laboratorium exhibition
The installation
Start up of the experiment
Results of the experiment
Conclusions
The second series (2000–2001)
The N01SE exhibition
The exhibition
Installation at Kettle's Yard in Cambridge
Installation at the Wellcome Gallery in London
Iconoclasm
Installation at the Palais de la Découverte in Paris
The portable Talking Heads
Look into the Box
Conclusions
Beyond the Talking Heads
Beyond the Talking Heads experiment
Experiments with the aibo robots
aibo's first words
The Perspective Reversal experiment
Scaling up to grammar
Early syntax experiments
The Case Grammar experiments
Scaling up the vision system
Object identification
Event identification
Qualitative descriptors
Scaling up the language system
Analogy as the driver of generalisation
Conclusions
Language strategies for humanoid robots
The Proper Naming Game
Challenges
Semiotic networks
Action Games
The Colour Description Game
Compositional procedural semantics with IRL
Building blocks for natural language semantics
Strategies for colour
Translation to grammar
Influence of embodiment
Conclusion
Language evolution
Culture-driven language evolution
Fitness landscapes
Fitness landscapes of language systems
The fitness landscape of language strategies
Selection and alignment of language strategies
Generation of new strategies
A meta-strategy for generating new conceptualisation strategies
Meta-strategies for generating new lexicogrammatical strategies
Conclusions
Bibliography
Index
Name index
Subject index
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