Search found 1994 matches

by Michel
Sat Jan 05, 2019 10:02 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening testing suites efficiency
Replies: 60
Views: 10119

Re: Opening testing suites efficiency

I posted an update of the document containing the formula for the pentanomial model. The factors of 2 are confusing but I think I got it right. http://hardy.uhasselt.be/Toga/normalized_elo.pdf Michel, I will have a look, I am on vacation now on my phone, hard to do anything. And this formal mathema...
by Michel
Wed Jan 02, 2019 3:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Opening testing suites efficiency
Replies: 60
Views: 10119

Re: Opening testing suites efficiency

I updated the normalized elo document http://hardy.uhasselt.be/Toga/normalized_elo.pdf with a proof that normalized elo is a measure for the amount of effort it takes to separate two engines (this is section 5). First of all I had to think about the formal meaning of this statement. So I introduce t...
by Michel
Mon Dec 31, 2018 3:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fixed nodes games and the pentanomial model.
Replies: 25
Views: 2853

Re: Fixed nodes games and the pentanomial model.

Yes, it is small, but at ultra-bullet. At bullet it's already probably above 20% in variance even from 2moves_v1. High correlation can be obtained with unbalanced openings, but they are efficient in resolution (Normalized Elo) at high draw rate, say higher than 60%. I might try 3 million nodes per ...
by Michel
Sun Dec 30, 2018 11:41 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fixed nodes games and the pentanomial model.
Replies: 25
Views: 2853

Re: Fixed nodes games and the pentanomial model.

Yes, it is small, but at ultra-bullet. At bullet it's already probably above 20% in variance even from 2moves_v1. High correlation can be obtained with unbalanced openings, but they are efficient in resolution (Normalized Elo) at high draw rate, say higher than 60%. I might try 3 million nodes per ...
by Michel
Sun Dec 30, 2018 10:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fixed nodes games and the pentanomial model.
Replies: 25
Views: 2853

Re: Fixed nodes games and the pentanomial model.

Yes, it is small, but at ultra-bullet. At bullet it's already probably above 20% in variance even from 2moves_v1. High correlation can be obtained with unbalanced openings, but they are efficient in resolution (Normalized Elo) at high draw rate, say higher than 60%. I might try 3 million nodes per ...
by Michel
Sun Dec 30, 2018 4:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fixed nodes games and the pentanomial model.
Replies: 25
Views: 2853

Re: Fixed nodes games and the pentanomial model.

I tried SF_dev versus the recent SF10, maybe a bit too distant relative. First, fixed nodes does not reflect the fixed time (strength) numbers, one has to be careful using fixed nodes only for patches not affecting NPS. SF_dev is about 8 +/- 3 Elo points stronger than SF10 at fixed time, but at 10,...
by Michel
Sat Dec 29, 2018 8:59 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Fixed nodes games and the pentanomial model.
Replies: 25
Views: 2853

Fixed nodes games and the pentanomial model.

I was going to experiment with this on fishtest but I am currently a bit busy (moreover it is a tradition, started by Marco Costalba, to forcibly deride _any_ kind of research on fishtest even for those who contribute more games than they use, so it is always an uphill battle). I wonder if it has be...
by Michel
Wed Dec 26, 2018 9:53 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: piece lists advantage with bit-boards?
Replies: 16
Views: 1539

Re: piece lists advantage with bit-boards?

does a bit-board based position representation with piece lists offer any advantage over a bit-board? & is it dependent on the architecture & the presence of bit-scan instructions? Not sure what exactly you mean. Bitboards are kind of piece lists already. Additional piece lists would cost a lot of ...
by Michel
Sat Dec 22, 2018 3:09 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI pondering done right
Replies: 52
Views: 4014

Re: UCI pondering done right

Ras wrote:
Fri Dec 21, 2018 10:59 am

Everything except a crash is OK; I default to 5 seconds.
Funny that you say this. The SF maintainers will argue that a crash is a perfectly valid and even desirable reaction to an illegal command since otherwise writing an UCI parser is too complicated...
by Michel
Sat Dec 22, 2018 1:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI2WB 4.0
Replies: 82
Views: 4447

Re: UCI2WB 4.0

Well, as you say, the problem is on Windows. In the initial design I used separate threads for listening to the GUI and the engine. But the problem was that the GUI thread is not always able to immediately relay (translated) commands to the engine, as in UCI it is for instance not allowed to set op...