Author: James T. Walker
Date: 11:25:02 09/02/99
Go up one level in this thread
On September 01, 1999 at 22:48:49, Robert Hyatt wrote: >On September 01, 1999 at 14:35:37, James T. Walker wrote: > >>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 > >Sounds like a bug. :) > >Bob That's what I thought. I emailed this problem to Chessbase a while back but they chose to ignore it. Jim Walker
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