Author: Robert Hyatt
Date: 20:59:41 07/28/04
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On July 28, 2004 at 11:58:45, Martin Slowik wrote: >On July 27, 2004 at 15:55:16, Robert Hyatt wrote: > >>time to the search and extensions, a part of the time to the evaluation, a part >>of the time to the book selection code, a part of the time to book learning, a >>part of the time to position learning, a part of the time to parallel search, >>and so forth. We make those choices at the time we do the work. >> >>Now, when you turn off a feature I wrote, you are saying "that part of your time >>was thrown away and is not going to be worthwhile in this match because I am not >>going to use that part." What if I did position learning and my opponent chose >>not to. The time I spent on position learning you just threw away. The time he >>saved by not doing it was spent elsewhere in the engine, and you did not throw >>that away. >> >> >>That was my point. An engine is equal to the sum of all its parts. Not the >>some of a selected sub-set of its parts... > >In some (most?) cases the user is only interested in a subset of the engines >abilities. If I use a chess program mainly for analysis and not for engine vs. >engine tournaments, I'm definitely not interested in its learning abilities. >Instead I want to know how it compares in fresh situations, in positions >probably never seen before. That's short-sighted. IE when you analyze, you often back up, try different moves, to see what is going on. Position learning is a great help there to use that information from earlier searches to help with later searches to make them more accurate. The SSDF and most other rating lists unfortunately >don't answer that question. No, but then engines are not designed to answer that particular question very accurately. They are designed to play chess from one side of the board, not behave like a neutral observer and give zero-sum analysis from either side. They do OK at that, but not as well as they play real games. > >Best, >Martin
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