?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Gossip%2C+Sexual+Recombination+and+the+El+Farol+Bar%3A+modelling+the+emergence+of+heterogeneity&rft.creator=Edmonds%2C+Bruce&rft.subject=Artificial+Intelligence&rft.subject=Complexity+Theory&rft.subject=Machine+Learning&rft.subject=Social+Psychology&rft.description=Brian+Arthur's+%60El+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%3A+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.&rft.date=1998&rft.type=Conference+Paper&rft.type=NonPeerReviewed&rft.format=application%2Fpostscript&rft.identifier=http%3A%2F%2Fcogprints.org%2F514%2F1%2FemhetA4.ps&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F514%2F5%2Femhet.pdf&rft.identifier=++Edmonds%2C+Bruce++(1998)+Gossip%2C+Sexual+Recombination+and+the+El+Farol+Bar%3A+modelling+the+emergence+of+heterogeneity.++%5BConference+Paper%5D++++(Unpublished)++&rft.relation=http%3A%2F%2Fcogprints.org%2F514%2F