author question: auto-tuning evaluation features

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BubbaTough
Posts: 1154
Joined: Fri Jun 23, 2006 5:18 am

author question: auto-tuning evaluation features

Post by BubbaTough »

Howdy,

For those of you that successfully auto-tune your evaluation parameters(either by self play or move/score matching) how long/deep do you run per move? And are there certain parameters you find you need to spend more time on (or search deeper) during the tuning process?

I have been fooling around with a new auto-tuning approach for Hannibal, which I have started testing on some king safety features, and after some mediocre results on my first run started to vaguely remember some conclusion I had years ago that king safety was harder to auto-tune than many other features because it required more depth/time per move.

-Sam
Ferdy
Posts: 4851
Joined: Sun Aug 10, 2008 3:15 pm
Location: Philippines

Re: author question: auto-tuning evaluation features

Post by Ferdy »

BubbaTough wrote:Howdy,

For those of you that successfully auto-tune your evaluation parameters(either by self play or move/score matching) how long/deep do you run per move? And are there certain parameters you find you need to spend more time on (or search deeper) during the tuning process?

I have been fooling around with a new auto-tuning approach for Hannibal, which I have started testing on some king safety features, and after some mediocre results on my first run started to vaguely remember some conclusion I had years ago that king safety was harder to auto-tune than many other features because it required more depth/time per move.

-Sam
If it requires you more depth or time to tune your king-safety eval parameters, would it be because there are missing features that needs to be added, so that it is now aware even when search time is limited?