Author: James T. Walker
Date: 11:35:37 09/01/99
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On September 01, 1999 at 07:58:16, Robert Hyatt wrote: >On August 31, 1999 at 21:57:12, James T. Walker wrote: > >>I recently conducted a "Tournament" between Hiarcs 7.32 Fritz 5.32 & Junior 5.0. >> With about 250 games played by each program the results left Hiarcs in first >>place with Fritz in second and Junior in third. Then I accidently transferred >>20 games of Blitz (5/0) of Hiarcs vs Comet B05 which Hiarcs won >>19.5 - 0.5. The Strange thing is after adding these 20 games and recomputing >>the ELO (Fritz GUI does this) Hiarcs fell from 1st place to 3rd place?? Does >>this make sense? Help! >>Jim Walker > > >It probably uses the rating of the opponent since with just 3 players there is >_no_ way to get any sort of reasonable rating anyway... It probably considered >comet significantly weaker and had a lower rating for it. And the TPR rating >then killed the calculations. Hello Bob, The Comet B05 had no rating going in so it is treated the same as others in the beginning. The only difference is that it had only played 20 games. According to the Fritz manual when I "Create" an ELO start list each player gets the same starting ELO(e.g. 2400) which enables the calculation of a tournament performance rating. In the next step one puts in this performance value as starting value to create new and more exact performances. Chessbase claims the algorithm does assume a 2400 average elo of the players in the database and says you have to "gauge" the list to correct for this. The thing I don't understand is if the assumed average is 2400 to begin with then why would the end result show all 4 programs with an ELO of less than 2400? Thanks, Jim Walker
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