Author: Norm Pollock
Date: 17:36:51 03/16/05
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On March 16, 2005 at 20:10:43, Dann Corbit wrote: >On March 16, 2005 at 19:23:58, Norm Pollock wrote: > >>pgnelo is a utility that statistically analyzes a pgn file's elos and results. >>It can also create a subset file of the pgn file that only contains games within >>a specified elo distance (the elo difference between the players). >> >>The link is http://www.crafty-chess.com/down/Pollock >> >>Thanks to Peter Skinner for hosting. > >I do not know what your program does, but here is something I have thought would >be nice: > >1. Figure out what the overall win/loss/draw ratios are... >2. For each move figure out (on average) if it underperforms or overperforms, >along with a confidence figure. > >So (for instance) suppose that for some position, we see a given won/loss/drawn >performance. We could compare the overall won/loss/draw with the actual Elo >values of persons playing the move and compare how they should have scored with >how they actually scored. > >In broad terms, if Kasparov, Anand, and Shredder get bad scores as white against >inferior opponents, then the move stinks. > >If Crafty beats Shredder, Waitkin beats Anand, and Gelfand beats Kasparov as >black, then it's a great move. > >If we could statistically analyze a PGN file and then mark it up with Nags, that >would be peachy-creamy with a cherry on top. Dann, Take a look at Scid's eco browser. As you type A,B,C,D or E, then 1 or 2 etc, it gives you the win-draw-loss of each opening and subopening in that pgn file. The utility I introduced is quite different. It gives an overview of white v black, and the elo distribution in the pgn file. It also gives info on incomplete tags, such as missing results and missing elos. -Norm
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