--- abstract: "Brian Arthur's `El Farol Bar' model is extended so that the agents also learn and communicate. The learning and communication is implemented using an evolutionary process acting upon a population of mental models inside each agent. The evolutionary process is based on a Genetic Programming algorithm. Each gene is composed of two tree-structures: one to control its action and one to determine its communication. A detailed case-study from the simulations show how the agents have differentiated so that by the end of the run they had taken on very different roles. Thus the introduction of a flexible learning process and an expressive internal representation has allowed the emergence of heterogeneity." altloc: - http://www.cpm.mmu.ac.uk/cpmrep31.html chapter: ~ commentary: ~ commref: ~ confdates: 'Jun 29 - July 1' conference: "Computation in Economics, Finance and Engineering: Economic Systems (CEFES '98)" confloc: 'Cambridge, UK' contact_email: ~ creators_id: [] creators_name: - family: Edmonds given: Bruce honourific: '' lineage: '' date: 1998 date_type: published datestamp: 1998-08-07 department: ~ dir: disk0/00/00/05/14 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: [] editors_name: [] eprint_status: archive eprintid: 514 fileinfo: /style/images/fileicons/application_postscript.png;/514/1/emhetA4.ps|/style/images/fileicons/application_pdf.png;/514/5/emhet.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: unpub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'learning, social, agents, genetic programming, heterogenaity, emergence, representation, expressiveness, naming, simulation, economics, multi-agent systems' lastmod: 2011-03-11 08:54:01 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: ~ pagerange: ~ pubdom: FALSE publication: ~ publisher: ~ refereed: FALSE referencetext: ~ relation_type: [] relation_uri: [] reportno: ~ rev_number: 14 series: ~ source: ~ status_changed: 2007-09-12 16:29:43 subjects: - comp-sci-art-intel - comp-sci-complex-theory - comp-sci-mach-learn - soc-psy succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: 'Gossip, Sexual Recombination and the El Farol Bar: modelling the emergence of heterogeneity' type: confpaper userid: 192 volume: ~