Search found 376 matches

by noobpwnftw
Thu Aug 08, 2019 10:20 am
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

I do not understand why multipv=4 and depth 22 is the best. For multi-pv I think that it is dependent on the position and for example it is not logical to have multipv=4 in positions when there are only 2 options that do not lose a lot of material when it is logical to use more than 4 options in ca...
by noobpwnftw
Sat Aug 03, 2019 7:59 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

One principle has to be noted that the score of a move provided only makes sense to those of the moves on the very same position. The database handles aggregation of scores on subsequent lines internally and it does not follow mini-max calculation. But two distinct positions, say B and C, can both ...
by noobpwnftw
Sat Aug 03, 2019 7:37 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

One principle has to be noted that the score of a move provided only makes sense to those of the moves on the very same position. The database handles aggregation of scores on subsequent lines internally and it does not follow mini-max calculation. But two distinct positions, say B and C, can both ...
by noobpwnftw
Sat Aug 03, 2019 4:47 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

One principle has to be noted that the score of a move provided only makes sense to those of the moves on the very same position.
The database handles aggregation of scores on subsequent lines internally and it does not follow mini-max calculation.
by noobpwnftw
Fri Aug 02, 2019 9:53 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

How was the "winrate" for each position determined? I suspect it is logistic function based on score. The score is from "the scores been back-propagated using a weighted averaging function" see first post of this thread. In javascipt when winrate is missing (by design) for mate scores, I use // 201...
by noobpwnftw
Fri Aug 02, 2019 4:43 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

Thanks. Nice idea, to automate the creation of an opening book. Unfortunately, depth 22 is way too low to provide a reliable foundation, since most of the leaf positions are quiet and positional in nature. Unfortunately, such a data set which is better in both quality and quantity does not yet exis...
by noobpwnftw
Fri Aug 02, 2019 3:28 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

How was the "winrate" for each position determined? I suspect it is logistic function based on score. The score is from "the scores been back-propagated using a weighted averaging function" see first post of this thread. In javascipt when winrate is missing (by design) for mate scores, I use // 201...
by noobpwnftw
Fri Aug 02, 2019 2:31 pm
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

My API endpoint supports HTTPS, so you could just change the base URL and get rid of the unsafe script warnings.
by noobpwnftw
Thu Aug 01, 2019 5:28 am
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

Ferdy wrote:
Wed Jul 31, 2019 12:50 pm
How do I know if positions from the run are saved in cloud?
It will be there, just currently the DB has a very long queue, need a while to process them.
by noobpwnftw
Wed Jul 31, 2019 7:48 am
Forum: Computer Chess Club: General Topics
Topic: Database snapshot
Replies: 114
Views: 20888

Re: Database snapshot

finally there exists a "Discover" program people can run, which loads any UCI-compatible engine and play games, contributing moves encountered during the process. I tried to compile ChessDBDiscover and it seems to work. Created an engine dir and put engine.exe, a renamed stockfish dev engine, then ...