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Re: [Bug-gnubg] Using weights files of different sizes

From: Philippe Michel
Subject: Re: [Bug-gnubg] Using weights files of different sizes
Date: Tue, 14 Dec 2010 21:36:22 +0100 (CET)
User-agent: Alpine 2.00 (BSF 1167 2008-08-23)

On Tue, 27 Apr 2010, Øystein Johansen wrote:

I've uploaded a quick and dirty patch to neuralnetsse.c which should do the

A binary weights file with the better net is found here:

It should be quite simple. Just patch the code and recompile, and replace
gnubg.wd with the alternative-gnubg.wd
Please test it out. If it's good, we make it "official".

I have been using code with this patch applied for some time without problems. Mostly with the original weights and occasionally with the alternative above.

I tried the new net only superficially but didn't notice obvious changes while playing it. Analyzing old matches with both old and new nets found a few differences (and rollouts showed the new net right in the majority of cases), but these were mostly close technical plays like while bearing in against an anchor. Did I miss something ?

How did you train this new net ? From the same data than the current one, just with a larger hidden layer ?
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