Newsgroups: comp.ai.genetic
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From: pa-ross@pat.uwe.ac.uk (PA Ross)
Subject: Re: Question from an AI weenie
Message-ID: <1995May16.154602.21314@pat.uwe.ac.uk>
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References: <Pine.OSF.3.91.950512001035.25176A-100000@odin.cbu.edu> <3p4e0i$avm@deadmin.ucsd.edu> <1995May16.071812.16985@pat.uwe.ac.uk>
Date: Tue, 16 May 1995 15:46:02 GMT
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Hello all,

Thanks to everyone that replied to my previous post ! I have now written my
GA in c++ and have noticed two curious effects.

Firstly the random number generator, generates the same random numbers every
single run. It seems to just be looking up a table ????? Am I using the
stdlib random() function incorrectly ?

Secondly I'm worried about testing the GA. I have observed that the Fitness
of the colony steadily increases until it reaches peak fitness. It then hovers
around this for a while before it starts to come crashing down and behaving
unpredictably. Is this a natural phenomina or a bug ? This sort of thing 
definately happens in nature, if two animals breed with similar genes then the
resulting offspring do tend to be weaker.
 
Anyway thanks for all the help,

Paul

