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- From: pja@neuron.cis.ohio-state.edu (Peter J Angeline)
- Newsgroups: comp.ai.genetic
- Subject: Re: GA versus Simulated Annealing
- Date: 21 Jan 1993 22:46:54 -0500
- Organization: Ohio State Computer Science
- Lines: 34
- Sender: pja@cis.ohio-state.edu
- Message-ID: <PJA.93Jan21224649@neuron.cis.ohio-state.edu>
- References: <1993Jan19.155159.16736@thunder.mcrcim.mcgill.edu>
- <1993Jan21.172459.27732@cs.ucf.edu>
- Reply-To: pja@cis.ohio-state.edu
- NNTP-Posting-Host: neuron.cis.ohio-state.edu
- In-reply-to: long@next1.acme.ucf.edu's message of Thu, 21 Jan 1993 17:24:59 GMT
-
- In article <1993Jan21.172459.27732@cs.ucf.edu> long@next1.acme.ucf.edu (Richard Long) writes:
-
- From the few cases that I've read about the successes of GA,
- crossover is particularly good for a problem that has a natural
- hierarchical structure to the optimal solution, since crossover exploits
- local fitness maxima in the construction of a global maximum.
-
- Not quite right. The _building block hypothesis_ states that GAs work well
- when the best solutions are _compositional_ rather than hierarchical. By
- compositional I mean that smaller pieces of the solution are pretty good but
- when you get a few of the pretty good smaller pieces together then the result
- is something better than all of the smaller pieces. This tops out when all of
- the small pieces are together giveing a maximal fitness.
-
- --
- Richard Long
- Institute for Simulation and Training
- University of Central Florida
- 12424 Research Parkway, Suite 300, Orlando, FL 32826
- (407)658-5026, FAX: (407)658-5059
- long@acme.ucf.edu
-
- -pete angeline
-
- -------------------------------------------------------------------------------
- Peter J. Angeline ! Laboratory for AI Research (LAIR)
- Graduate Research Assistant ! THE Ohio State University, Columbus, Ohio 43210
- ARPA: pja@cis.ohio-state.edu ! "Nature is more ingenious than we are."
-
- --
- -------------------------------------------------------------------------------
- Peter J. Angeline ! Laboratory for AI Research (LAIR)
- Graduate Research Assistant ! THE Ohio State University, Columbus, Ohio 43210
- ARPA: pja@cis.ohio-state.edu ! "Nature is more ingenious than we are."
-