Author: Peter Fendrich
Date: 04:44:35 03/22/04
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On March 22, 2004 at 07:06:53, Tord Romstad wrote: >On March 22, 2004 at 03:40:57, Daniel Shawul wrote: > >>Hello >> >>I have decided to use attack tables. I just did >>a rough implementation of it at the beginning of the eval >>according to Ed's paper. The problem is the thing dropped the nodecount >>by almost 40% . Initial position nodecount was 800000 and now it is 500000. >>Do incremental move attack tables help? And how do i update the table? It seems >>very difficult to update a sliding move and other special cases. > >Hello Daniel, > >Yes, attack tables tend to be expensive. I calculate them from scratch at >every node, and my impression is that most others (including Ed) does the >same. Perhaps it would be possible to do it faster by some sort of >incremental updating, but I am fairly sure it would still slow you down a lot. ...and also provide a new source of bugs that are very hard to find. /Peter >You simply have to decide whether it is worth the cost. > >Tord
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