Re: [Bug-gnubg] User training of the Neural Nets

[Øystein Johansen]

> So there's a separate program for developing NNs? I'd be interested
> in having a look. What do I need to do?

Yes, Joseph has developed some tools.

If your CVSROOT environment variable is set to the usual
right value. I think you can just type:

cvs co gnubg-nn

If you don't use cvs, I can mail you the code. If you can't
wait, you can browse it here:
http://cvs.savannah.gnu.org/viewcvs/gnubg/gnubg-nn/

The code uses a lot of python.

> Am I right in thinking that the 5-node pruning nets do not use SSE
> vectorisation. At one point, you were considering implementing this.
> Did anything come of it?

No, I don't think there is much to gain.

> IIRC, you also mentioned increasing the hidden nodes to 8 - because
> the loops have to be in multiples of 4.

Exactly. With five hidden nodes it's just one multiplication
with a sse register and then an additional multiplication
in an ordinary register. Increasing to 8 gives a two
multiplications in a sse register. I guess it will be about the same
computation speed as with 5 hidden nodes, but I guess it won't improve
the playing strength much. However, I may improve the code structure.

> LINEARITY

I'll get back to this.

-Øystein

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