Newsgroups: comp.ai.genetic,comp.ai.alife
Path: cantaloupe.srv.cs.cmu.edu!europa.chnt.gtegsc.com!howland.reston.ans.net!vixen.cso.uiuc.edu!rs6000.cmp.ilstu.edu!tskunka
From: tskunka@rs6000.cmp.ilstu.edu (Tom Kunka)
Subject: Re: Prisoner's Dilemma
Message-ID: <1995Jun26.150050.30898@rs6000.cmp.ilstu.edu>
Date: Mon, 26 Jun 1995 15:00:50 GMT
References: <3sdioh$5tf@mars.efn.org> <BrianS-2306950136200001@slip-1-92.ots.utexas.edu> <Ted.Belding-2406951449220001@pm056-27.dialip.mich.net> <Pine.ULT.3.91.950625021800.7629A-100000@rac8.wam.umd.edu>
Organization: Illinois State University
X-Newsreader: TIN [version 1.2 PL2]
Followup-To: comp.ai.genetic,comp.ai.alife
Lines: 36
Xref: glinda.oz.cs.cmu.edu comp.ai.genetic:6203 comp.ai.alife:3704

Keith Wiley (keithw@wam.umd.edu) wrote:
: > > I thought everyone knew that Tit-for-Tat had been proven to be the best
: > > strategy.
: > 
: > Nope.  If you're playing a single round, the best strategy is "always
: > defect".  

: well obviously, tit-for-tat doesn't exactly dictate single round 
: situations.  What most people don't realize however is that the number of 
: rounds played must be unknown to all parties involved.  Otherwise the 
: best strategy is still always defect, because every round is 
: quintessentially the last round of the match.

I was doing some work with the P.D. and a GA...All in the past :-(
But anyway just for fun I put the GA to evolve against TFT and found that
the GA would find a way to consistantly beat TFT.  I was using a 3 deep
memory and I can't remember how many rounds (somewhere near 100).  I thought
that this was amazing...but then again not...it evolved to combat TFT
specifically and never played another strategy.

later....tk  


:  
: . . .. ... ..... ........ ............. .....................
: .. ... ..... ....... ........... ............. .................
: . .. .... ........ ................ ................................
: Keith Wiley, Electrogenetic Engineer             *
: University of Maryland at College Park            *   * *     *   *      *
: email:  keithw@wam.umd.edu                      ***    **   * *    **     *
: world wide web:  http://www.wam.umd.edu/~keithw        *     **   **    ***
-- 
"The pilot's gone mad, he's jumped overboard   Thomas Shawn Kunka	  
 with lunatic smile on his face, and he     \0  Academic Computing              
 laughed as he cut the umbilical cord,       |\  Illinois State University       
 now he's drifting forever in space."       /\    http://www.ilstu.edu/          
