Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Evaluation in Rebel

Author: Uri Blass

Date: 03:00:58 01/07/03

Go up one level in this thread


On January 07, 2003 at 05:47:37, Ed Schröder wrote:

>On January 07, 2003 at 05:05:31, Tony Werten wrote:
>
>>Hi Ed,
>>
>>your board tables seem to ignore xray attacks.
>
>xray attacks are done, it's only not mentioned as I thought it would be
>self-understood.
>
>
>>Is that because it doesn't matter too much, or because it's mainly used for move
>>ordering ( so it's only less effective but not wrong ) ?
>
>I use xray also for evaluation, for instance for mobilty, king safety, so xray
>must be done and in an accurate way, I will write a little about it in the
>mobility section.
>
>Ed

Hi Ed,

I have 2 questions about the evaluation.

1)Did you try to do incremental evaluation.

I think that incremental evaluation may be faster than doing the full evaluation
at every node until depth-1.

The problem is that doing it without bugs is not easy espacially when you have a
big evaluation.

2)Did you check that your full evaluation is really productive if you assume the
same number of nodes.
I remember that when I tested personalities of Rebel I found that knowledge=500
changes it's mind more often so it needs more nodes to finish the same
iteration.

knowledge=500 beat knowledge=100 with fixed depth but the interesting question
is if it also beat knowledge=100 with fixed number of nodes.

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.