Search found 181 matches

by Pio
Thu Jul 09, 2020 7:42 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Question on Texel's Tuning Method
Replies: 14
Views: 2675

Re: Question on Texel's Tuning Method

There’s a great deal of power in “averaging”. See the Central Limit Theorem for some mathematical justification of this. I tried to win the “guess the weight of the leg of ham” competition in village event once by going last and trying to do a running average of everybody else’s guesses as they ann...
by Pio
Mon Jul 06, 2020 5:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish has included WDL stats in engine output
Replies: 58
Views: 10102

Re: Stockfish has included WDL stats in engine output

That was not my point however. My point is that it is simple to convert an existing alpha beta engine to work with win probabilities (or should I say win or draw probabilities to satisfy you). Using my way of probabilities in alpha beta has many obvious advantages as I mentioned in my previous post...
by Pio
Mon Jul 06, 2020 12:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9426

Re: Throwing out draws to calculate Elo

The only one that really puzzles me is hgm, I mean you are a physicist. The Heisenburg uncertainty principle, the laws of thermodynamics, quantum physics, Schrodinger's cat. If there is any person on this board who should understand uncertainty, it is hgm, but you have no understanding of uncertain...
by Pio
Sun Jul 05, 2020 11:30 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9426

Re: Throwing out draws to calculate Elo

Elo figures are already correctly reported with +/- Elo error bounds. There is no need to ask the Stockfish developers to truncate anything. However, if they are using LOS in fishtest, they should be warned that they are tuning Stockfish with a uniform PRNG (given enough games) It's only a uniform ...
by Pio
Sun Jul 05, 2020 10:52 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish has included WDL stats in engine output
Replies: 58
Views: 10102

Re: Stockfish has included WDL stats in engine output

My point is that it is simple to convert an existing alpha beta engine to work with win probabilities (or should I say win or draw probabilities to satisfy you). Using my way of probabilities in alpha beta has many obvious advantages as I mentioned in my previous post. An additional gain is that ca...
by Pio
Sun Jul 05, 2020 8:13 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish has included WDL stats in engine output
Replies: 58
Views: 10102

Re: Stockfish has included WDL stats in engine output

Honestly I have always thought that it was strange that the win probability was not the standard. There is no problem using win probabilities in an alpha beta framework (just think opponent’s win probability = 1 - my win probability. Thinking in win probabilities is much more intuitive and can also...
by Pio
Sat Jul 04, 2020 9:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Stockfish has included WDL stats in engine output
Replies: 58
Views: 10102

Re: Stockfish has included WDL stats in engine output

I am appalled by this patch... Really doubt this kind of silly gimmick would have made it when Marco was the maintainer. An alpha beta search trying to pretend to be a MCTS, for marketing reasons. I would expect as much from commercial closed source engines, like when Rybka was underreporting its s...
by Pio
Fri Jul 03, 2020 10:30 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9426

Re: Throwing out draws to calculate Elo

I am addressing the question pieces at a time, and the draws are an important facet. I was just making the point that you don't believe in LOS either, because you do not trust the LOS number. I mean, if LOS says that the change is almost certain to be an improvement, why wouldn't you use it? Clearl...
by Pio
Fri Jul 03, 2020 12:28 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9426

Re: Throwing out draws to calculate Elo

Yes, so far we have not even addressed my difficulty with throwing out the draw information. I do think that the fact that LOS has enormous difficulty determining that two engines of equal strength are equal and the fact that it is based on the spread between wins and losses should give us pause wh...
by Pio
Thu Jul 02, 2020 11:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Throwing out draws to calculate Elo
Replies: 214
Views: 9426

Re: Throwing out draws to calculate Elo

Yes, so far we have not even addressed my difficulty with throwing out the draw information. I do think that the fact that LOS has enormous difficulty determining that two engines of equal strength are equal and the fact that it is based on the spread between wins and losses should give us pause wh...