The dumbest neural network there is

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PK
Posts: 905
Joined: Mon Jan 15, 2007 11:23 am
Location: Warsza

The dumbest neural network there is

Post by PK »

https://github.com/nescitus/LizardBrain

This engine contains the dumbest neural network for chess evaluation that exists. 784x16x1 (the same size as Tomitank, which was a direct inspiration), with extremely dumb tuner caring only for the input layer. Because of working on a single laptop, I took a shortcut and initialized some weights in a way mimicking piece/square tables.

Current iteration earned a dubious distinction of playing at 2000-2100 level while using a 2800 Elo-capable search.

If it proves capable of learning something more, I'll consider resurrecting Rodent with Tomitank-style neural network adjustement of its eval. If not, view it as an educational toy showing what a real neural network does.
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Sylwy
Posts: 4822
Joined: Fri Apr 21, 2006 4:19 pm
Location: IAȘI - the historical capital of MOLDOVA
Full name: Silvian Rucsandescu

Re: The dumbest neural network there is

Post by Sylwy »

PK wrote: ↑Fri Apr 26, 2024 4:01 pm https://github.com/nescitus/LizardBrain

This engine contains the dumbest neural network for chess evaluation that exists. 784x16x1 (the same size as Tomitank, which was a direct inspiration), with extremely dumb tuner caring only for the input layer. Because of working on a single laptop, I took a shortcut and initialized some weights in a way mimicking piece/square tables.

Current iteration earned a dubious distinction of playing at 2000-2100 level while using a 2800 Elo-capable search.

If it proves capable of learning something more, I'll consider resurrecting Rodent with Tomitank-style neural network adjustement of its eval. If not, view it as an educational toy showing what a real neural network does.
Alf 1.09 64-bit has 2061 Elo (CCRL Blitz). The match is underway.

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towforce
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Location: Birmingham UK
Full name: Graham Laight

Re: The dumbest neural network there is

Post by towforce »

How about...

1. Take the smartest neural network there is

2. Multiply all its weights by -1

Maybe it could create a new opening: walk the king straight to the opposite side of the board! :)
Human chess is partly about tactics and strategy, but mostly about memory
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PK
Posts: 905
Joined: Mon Jan 15, 2007 11:23 am
Location: Warsza

Re: The dumbest neural network there is

Post by PK »

New network uploaded, ~2450 Elo
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