Search found 313 matches

by jorose
Tue Jun 02, 2020 11:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: How to work with batch size in neural network
Replies: 6
Views: 1366

Re: How to work with batch size in neural network

A bit of a hack you can do which is for sure not optimal, but much better than pure minimax is to do depth 1 minimax at the leaf nodes. I.e. if you have 30 legal moves in a position, that gives you a batch size of 30. This allows you to otherwise take full advantage of AB benefits. Also note, depend...
by jorose
Tue Jun 02, 2020 7:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: asymmetric evaluation and TT
Replies: 8
Views: 3240

Re: asymmetric evaluation and TT

I am working on the issue of asymmetric eval, because I would like to have asymmetric contempt as a feature. In your case I am not quite following the issue, as the side to move should be part of the position hash anyways? The position is not the same if it is white or black to move respectively? In...
by jorose
Tue Jun 02, 2020 6:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: How to work with batch size in neural network
Replies: 6
Views: 1366

Re: How to work with batch size in neural network

I also think there might also be some confusion with regards to technical terms. A data sample is an instance of your data set. In your case a sample is any given chess position to be evaluated in some way. A feature, as you mentioned, is an attribute of your data and has some value for each data sa...
by jorose
Sun May 31, 2020 10:30 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/15, 40/2 and FRC lists updated (30th May 2020)
Replies: 2
Views: 740

Re: CCRL 40/15, 40/2 and FRC lists updated (30th May 2020)

Thank you for testing Winter in 40/2 already! The improvement is looking much better than I expected :D
by jorose
Fri May 29, 2020 12:47 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: The Speedy Rating List
Replies: 59
Views: 10214

Re: The Speedy Rating List

This is an interesting benchmark to me. For the most part this seems reasonably accurate. I find it interesting to compare your lists with 1s/move and 4s/move. Booot moving up relative to Laser and Rubichess was somewhat expected. Notable is Ethereals improvement which seems to cement it well above ...
by jorose
Fri May 29, 2020 12:39 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2020
Replies: 598
Views: 184999

Re: New engine releases 2020

It seems I might not have expressed myself clearly enough. While clang gives a big speed boost, Winter 0.8 should still be noticeably slower in terms of N/s when compared to its predecessor. The reason for this is a heavier eval function which relies on a CNN for pawn structure feature extraction. I...
by jorose
Thu May 28, 2020 5:23 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2020
Replies: 598
Views: 184999

Re: New engine releases 2020

Jonathan, Winter 0.7 was positionally excellent already, and I liked its evaluation. I use it to analyze my opening repertoire and whole games in these openings, and its output makes sense. I guess it is because it doesn't reach absurd depths too fast, so I can understand it. On the other hand, I d...
by jorose
Thu May 28, 2020 4:19 am
Forum: Computer Chess Club: General Topics
Topic: Banksia GUI released
Replies: 1155
Views: 233347

Re: Banksia GUI released

I used the recent Winter v0.8 release as an opportunity to test a couple GUIs, including Banksia. I am for the most part quite happy and feel this will likely be one of my main chess applications (together with Cutechess, XBoard and Scid) moving forward. That being said, two points: When I ran a tou...
by jorose
Tue May 26, 2020 11:16 pm
Forum: Computer Chess Club: General Topics
Topic: Interesting game on TCEC
Replies: 11
Views: 3492

Re: Interesting game on TCEC

Allie eval is re-tuned to match SF between 0 and 4, while still matching its old eval at 10.0. So somewhere in the 6-8 range eval starts going up pretty fast it seems. Max eval now is 256. Cool, so we will be able to compare nicely until +4 and after that its just kind of like "We are basically jus...
by jorose
Tue May 26, 2020 5:39 am
Forum: Computer Chess Club: General Topics
Topic: New engine releases 2020
Replies: 598
Views: 184999

Re: New engine releases 2020

Winter v0.8 has been released! For unclear reasons, clang is giving a huge N/s boost in this new release. As a result of not having this boost, it is actually a regression compared to v0.7 on my test system. That being said, I am confident you will find this new version to be a nice improvement. I t...