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

[Philippe Michel]

On Tue, 27 Apr 2010, Øystein Johansen wrote:

> I've uploaded a quick and dirty patch to neuralnetsse.c which should do the
> trick.
> http://www.gnubg.org/media/nnsse.patch
>
> A binary weights file with the better net is found here:
> http://www.gnubg.org/media/alternative-gnubg.wd
>
> 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 ?