Author: Uri Blass
Date: 03:03:46 04/28/01
Go up one level in this thread
On April 28, 2001 at 05:00:22, Dan Andersson wrote: >I remember that Ernst A. Heinz found diminishing returns. There are diminishing >returns in many other two-player games e.g. Reversi and Checkers. One possible >explanation for its absence is that chess evaluation functions are of a low >quality, because that chess is more complex. > >Regards Dan Andersson I chose the nunn position and not regular games. There is a reason for it. I believe that theory sometimes leads to relatively simple drawn positions if you search deep enough and it may explain diminishing returns when I believe that the nunn positions are more complicated and you may need more plies to get the draw when depth is not important so it is going to be more hard to prove diminishing returns on the nuun2 match. I believe that if I continue this nunn2 experiment to Deep Fritz depthes 3-15 and tiger14 depth 3-15 then diminishing returns will be demonstrated statistically. I am going to do it at least for depth 9-10 and I did not decide how much I am going to continue it(one reason is that the exact computer time that I need is not clear to me) Matches at depth 8 or even 9 can take a short time but matches at bigger depthes are going to take more time. I guess that the time that is needed after upgrading my hardware is something like 3^(d-9) hours per match at fixed depth d against smaller depth. and it means 27 hours per match at depth 12,243 hours per match at depth 14, 729 hours per match at depth 15. If I play at least 11 matches at depth 15 in order to get 300 games for tiger(depth 15) and Fritz (depth 15) then I need something like 7290 hours that is almost a year of computer time. I am not going to give my computer more than an average of few hours in a day so I need some years to complete the experiment and it may be faster to wait for a faster hardware before starting matches at big depthes. Uri
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.