Author: Alvaro Jose Povoa Cardoso
Date: 07:03:04 04/14/04
Hi, I've been playing with the following history heurist variant: Along with the PieceType-From-To formulation I added 8 bits that correspond to the rightmost 8 bits of the hashkey. So the new index to the history table is as follows: HashKey-PieceType-From-To HashKey is only 8 bits as said before. The idea is to try to match as much as possible the moves that failed high with the 'true' posições where that happened since in the classic hitory heuristic aproach we have little or nothing that says that those history moves found at the current node where previously stored in the exact same position as the current one. In other words history moves don't mean they came from the same position. It is exactly this I'm trying to avoid. However when I tryed this idea it failed miserably with much higher node counts. My question is why did this failed? Is this a wrong idea from the very beginning? Best regards, Alvaro Cardoso
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.