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Paper at a Glance

Emergent Adaptive Lexicons
Luc Steels
Artificial Intelligence Laboratory
Vrije Universiteit Brussel
Pleinlaan 2, B­1050 Brussels, Belgium
E­mail: steels@arti.vub.ac.be

Abstract The paper reports experiments to test the hy­ pothesis that language is an autonomous evolving adaptive system maintained by a group of dis­ tributed agents without central control. The ex­ periments show how a coherent lexicon may spon­ taneously emerge in a group of agents engaged in language games and how a lexicon may adapt to cope with new meanings that arise or new agents that enter the group. The lexicon has several characteristics of natural language lexicons, such as polysemy, synonymy and ambiguity.
Keywords: origins of language, lexicon acquisition, self­organization.
1 Introduction The origins and evolution of language is still clouded in mystery, despite an extensive literature within linguis­ tics, psychology, anthropology and neurobiology (see a recent overview in [15]). The most common hypothesis being explored in American linguistics is that language is based on a species­specific innate ability (a kind of lan­ guage organ) and on the refinement of innate knowledge (universal grammar) by a parameter setting process [3]. This hypothesis suggests in turn that the language fac­ ulty and universal grammar came into existence due to a series of genetic mutations each giving an adaptive ad­ vantage [8] or alternatively that there has been a single `catastrophic' mutation giving rise to syntax and thus full language [2]. Such proposals are coherent and in principle ammenable to computational experimentation. For example, Batali [1] has investigated whether recur­ rent neural networks, with prior weights resulting from an evolutionary process, might explain the rapid learning and critical periods found in human language acquisition. Much work remains to be done however to make precise proposals for universal grammar and to show how a sim­ ple process of parameter setting may make it ...

@inproceedings{steels96emergentAdaptive,
  author={L. Steels},
  title={Emergent Adaptive Lexicons},
  year={1996},
  address={Cambridge, MA},
  editor={Maes, P. and Mataric, M. and Meyer, J.-A. and Pollack, J. and Wilson, S. W.},
  publisher={MIT Press},
  booktitle={SAB96},
  url={http://www.isrl.uiuc.edu/~amag/langev/paper/steels96emergentAdaptive.html},
  keywords={self-organization, lexicons, agents,evolutionary linguistics, simulation}
}

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