Author: pavel
Date: 22:47:13 11/18/00
Go up one level in this thread
On November 18, 2000 at 23:40:08, Dan Homan wrote: >On November 18, 2000 at 23:23:27, Brian Richardson wrote: > >>On November 18, 2000 at 23:06:36, Dan Homan wrote: >> >>>I've just put a new version of EXchess up on my website: >>> >>>http://pc.astro.brandeis.edu/BRAG/people/dch/chess.html >>> >>>The new version (v4.01) adds Temporal Difference evaluation learning to the >>>previous version (v3.14). I am not sure that this really increases the strength >>>of the program, but it was fun to work on. There are a couple of other minor >>>enhancements to the search and opening book code. >>> >>> - Dan >> >>About how many games with TD learning have been played and did it change your >>evaluation function much? > > >I've played hundreds of games, but I've also reset the learned values back to >the original parameters many times as well. For the parameters which come with >the released version, I am not sure how many games contribute. Another wrinkle >is that the program only 'learns' after a loss, so the number of 'learning >games' is smaller than the number of games played. > >One consistent result is that TD learning wants a smaller value for passed >pawns than I was using before (about 75% of my original 'hand-tuned' value). >Also my knight-outpost and bishop-outpost values are consistently increased >by the TD learning by a factor of 3 or 4. > > - Dan can you elavorate TD learning? as far as I know, it fixes value after each game. is there any file generated by the program as a .lrn file, which increases after game? or the eval is tuned externally? pavs
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.