"I don’t think it helps the strength much in 19x19, but it makes the games look prettier."
So regarding learning while playing on CGOS: The program changes, but the amount that the true ELO is going to move during it's CGOS lifetime is completely negligable. On Thu, Oct 14, 2010 at 1:09 PM, David Fotland <[email protected]> wrote: > On 9x9, playing against people, the opening learning is very important so > that they don’t find a winning sequence then just repeat it. This has been > in Igowin since it first shipped, in 1998. I don’t think it helps the > strength much in 19x19, but it makes the games look prettier. > > I use a persistent position hash table that stores every position visited > twice (or more) by games that were deliberately added (File, Add Game(s) to > database), and every position in every game played locally. The program > ships with a 19x19 database built from about 40K games. The next update > will also include 9x9 games from strong cgos programs. > > Move choices are biased based on the win/loss ratio, number of visits, > strength of strongest player moving into that position, depth in the game, > and probably more that I have long since forgotten. There is no hard > pruning or immediate move choices from this data, just biasing the search. > > David > >> -----Original Message----- >> From: [email protected] [mailto:computer-go- >> [email protected]] On Behalf Of Petr Baudis >> Sent: Thursday, October 14, 2010 3:02 AM >> To: [email protected] >> Subject: [Computer-go] ManyFaces learning >> >> On Wed, Oct 13, 2010 at 11:47:01PM -0700, David Fotland wrote: >> > > > Many Faces learns. I think most everyone follows the policy. As a >> > > > developer, I want each version of my program to have a separate name >> so >> > > Learns in what way? Won't repeat the exact same loss twice? >> > Yes. >> >> Intriguing! Do you think it actually improves its strength, or is that >> just an experiment? >> >> How does it know where the "losing variation" starts? Is it updating >> some pattern weights, or updating some persistent game tree? >> >> Thanks, >> >> -- >> Petr "Pasky" Baudis >> The true meaning of life is to plant a tree under whose shade >> you will never sit. >> _______________________________________________ >> Computer-go mailing list >> [email protected] >> http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
