Author: James Swafford
Date: 14:33:02 10/25/02
Go up one level in this thread
On October 25, 2002 at 15:55:55, Uri Blass wrote: >On October 25, 2002 at 14:46:24, James Swafford wrote: > >>On October 25, 2002 at 14:29:59, Uri Blass wrote: >> >>>On October 25, 2002 at 13:11:44, Robert Hyatt wrote: >>> >>>>On October 25, 2002 at 12:39:38, Ingo Lindam wrote: >>>> >>>>>Hello, >>>>> >>>>>I repost my former post under this new title just hoping to encourage >>>>>more people to join the discussion: >>>>> >>>>>I am new at the Computer-Chess Club and would like to discuss some >>>>>suggestions for (a new generation of) chess knowledge using (and >>>>>generating?) chess engines. During my time at the university and at my >>>>>first job after making my exams in computer science I was involved in >>>>>statistical speech/pattern recognition and machine translation. That >>>>>might atleast a reason for some of my ideas. >>>>> >>>>>I am not sure whether these suggestions have never been made or just >>>>>named to be impossible to implement. (I am sure they are not.) >>>>> >>>>>I would really like to see the computers measure a position rather in a >>>>>set of probabilities e.g. (P+,P=), where >>>> >>>> >>>>I think that if you look at what chess programs do, this is the essence of the >>>>evaluation. The larger the number, the greater the probability that side will >>>>win. The smaller the number, the greater the probability that side will lose. >>>>Scores near zero imply draw, of course... >>> >>>Not exactly. >>> >>>You can translate pawn to expected result but not to probabilities. >> >>It is trivial to translate a pawn score to a probability of a win. > >No it is not trivial. > >If the score is 0.00 what does it mean? It means the position can be considered a draw. Somehow potential has to be taken into account. > >Does it mean that you are sure of a draw or does it mean that both side have 50% >chances to win? > >Can you translate? > >>Any number of functions in which the two are directly related may >>be picked. Obviously, some are better than others. >> >> >>> >>>The expected result is the same in the following 2 cases: >>>probability 1% win for white and 98% draw >>>probability 40% win for white and 20% draw. >>> >>>The probabilities are not the same. >> >>So? That just means the pawn scores shouldn't be the >>same, either. > >In both cases the expected result is 50% but in the first case you are almost >sure about a draw when in the second case the position is less clear and both >sides have good chances to win. > I would rather be in a position in which I still have a chance to win, so I would score it higher than the almost certain draw. >Uri
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