?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Meme+and+Variations%3A+A+Computational+Model+of+Cultural+Evolution&rft.creator=Gabora%2C+L.&rft.subject=Evolution&rft.subject=Population+Biology&rft.subject=Theoretical+Biology&rft.subject=Cognitive+Psychology&rft.subject=Artificial+Intelligence&rft.subject=Complexity+Theory&rft.subject=Dynamical+Systems&rft.subject=Machine+Learning&rft.subject=Neural+Nets&rft.subject=Evolutionary+Psychology&rft.subject=Epistemology&rft.subject=Social+Psychology&rft.description=This+paper+describes+a+computational+model+of+how+ideas%2C+or+memes%2C+evolve+through+the+processes+of+variation%2C+selection%2C+and+replication.+Every+iteration%2C+each+neural-network+based+agent+in+an+artificial+society+has+the+opportunity+to+acquire+a+new+meme%2C+either+through+1)+INNOVATION%2C+by+mutating+a+previously-learned+meme%2C+or+2)+IMITATION%2C+by+copying+a+meme+performed+by+a+neighbor.+Imitation%2C+mental+simulation%2C+and+using+past+experience+to+bias+mutation+all+increase+the+rate+at+which+fitter+memes+evolve.+Memes+at+epistatic+loci+converged+more+slowly+than+memes+at+over-+or+underdominant+loci.+The+higher+the+ratio+of+innovation+to+imitation%2C+the+greater+the+meme+diversity%2C+and+the+higher+the+fitness+of+the+fittest+meme.+Optimization+is+fastest+for+the+society+as+a+whole+with+an+innovation+to+imitation+ratio+of+2%3A1%2C+but+diversity+is+comprimized.&rft.publisher=Addison+Wesley&rft.contributor=Nadel%2C+Lynn&rft.contributor=Stein%2C+Daniel+L.&rft.date=1995&rft.type=Book+Chapter&rft.type=NonPeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F531%2F1%2Fmav.htm&rft.identifier=++Gabora%2C+L.++(1995)+Meme+and+Variations%3A+A+Computational+Model+of+Cultural+Evolution.++%5BBook+Chapter%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F531%2F