Search found 4455 matches

by Ferdy
Thu Jan 21, 2021 2:15 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Texel tuning variant
Replies: 3
Views: 208

Texel tuning variant

After reducing the error by changing one parameter by +/- step, update the param value but don't use it when optimizing the next param value. For example you have initially a param1=10, param2=20, and initial error, increment param1 by 1 if error is reduced set param1 to 11. Now increment param2 by ...
by Ferdy
Thu Jan 21, 2021 12:33 am
Forum: Computer Chess Club: General Topics
Topic: Questionable positions in the Hard-Talkchess-2020 set
Replies: 21
Views: 1922

Re: Questionable positions in the Hard-Talkchess-2020 set

Revision 2021 to the Hard-Talkchess-2020 set (draft) : ... Still doubts about 4 positions : 10) Rd6xf6 -> A lot of moves are winning. But only Rxf6 gives a forseable mate. This position will probably stay. 15) h2-h4 -> Some other moves are close in eval : Bd2, Be3, h3 150) Bd4-f6 -> Qh6 is very clo...
by Ferdy
Wed Jan 20, 2021 5:44 pm
Forum: Computer Chess Club: General Topics
Topic: Questionable positions in the Hard-Talkchess-2020 set
Replies: 21
Views: 1922

Re: Questionable positions in the Hard-Talkchess-2020 set

Revision 2021 to the Hard-Talkchess-2020 set (draft) : I deleted : too easy positions, bad positions, too hard positions. It still have doubt about 4 positions. See at bottom. 128 positions left in the set (until now) : 1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - bm Nc6; id "Hard-Talkchess-2020....
by Ferdy
Wed Jan 20, 2021 2:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tapered Evaluation and MSE (Texel Tuning)
Replies: 220
Views: 5993

Re: Tapered Evaluation and MSE (Texel Tuning)

What I meant using many K values was that you determine as many K values as you have phases so you will have to determine 24 K values each corresponding to one phase. In that way you will have a good mapping between centipawn values and win probabilities for each phase. As it is now you and everyon...
by Ferdy
Tue Jan 19, 2021 9:15 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Cutechess-cli and SPRT
Replies: 4
Views: 196

Re: Cutechess-cli and SPRT

Hi all, Looking for some help re: SPRT. I've been happily using cutechess-cli for automated testing, and it works great. I'm now trying to use SPRT to terminate matches early, and save time. I'm using the following to test a new version of my engine against a very old version (several hundred ELO w...
by Ferdy
Tue Jan 19, 2021 9:03 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tapered Evaluation and MSE (Texel Tuning)
Replies: 220
Views: 5993

Re: Tapered Evaluation and MSE (Texel Tuning)

A good challenge next would be tuning the material and passer. The position can be dominated by material on one side but can be countered by the presence of a passed pawn on the other side. Hello Ferdy, please be so kind and give me a clear answer to the question, do you compare mse from data that ...
by Ferdy
Tue Jan 19, 2021 7:56 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tapered Evaluation and MSE (Texel Tuning)
Replies: 220
Views: 5993

Re: Tapered Evaluation and MSE (Texel Tuning)

Now the really interesting part... THE VALIDATION SETUP Algorithm: cpw-algorithm Stepsize: 5 evaltype: qs() tapered - material only initial vector: 100,100,300,300,300,300,500,500,1000,1000 param-content: P,P,N,N,B,B,R,R,Q,Q anchor: none K: 1.0 database: material.epd 13994 positions batchsize: 1399...
by Ferdy
Tue Jan 19, 2021 6:20 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Uci "go" command without other parameters
Replies: 19
Views: 467

Re: Uci "go" command without other parameters

An innocent user accidentally sends the command, go home How does your engine replies to it. Deuterium: go home info string unknown command go home I love this one ! Here is Minic's answer [...] uciok go home info string Info 2021-01-18 17:58:59-643: Received command : go home info string Info 2021...
by Ferdy
Tue Jan 19, 2021 6:15 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tapered Evaluation and MSE (Texel Tuning)
Replies: 220
Views: 5993

Re: Tapered Evaluation and MSE (Texel Tuning)

A good challenge next would be tuning the material and passer. The position can be dominated by material on one side but can be countered by the presence of a passed pawn on the other side. Hello Ferdy, please be so kind and give me a clear answer to the question, do you compare mse from data that ...
by Ferdy
Mon Jan 18, 2021 4:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tapered Evaluation and MSE (Texel Tuning)
Replies: 220
Views: 5993

Re: Tapered Evaluation and MSE (Texel Tuning)

A good challenge next would be tuning the material and passer. The position can be dominated by material on one side but can be countered by the presence of a passed pawn on the other side.