Author: Uri Blass
Date: 20:10:23 02/25/04
Go up one level in this thread
On February 25, 2004 at 21:17:12, Barry Baker wrote: >I'm trying to understand how to interpet the SSDF Rating List and have a few >questions. I'm a CCC newbie so I'll apologize in advance if my questions >indicate a complete ignorance of rating calculations or statistics. > >Has anybody analyzed the variability of a given engine's rating over a period of >time? If you look at the THE SSDF RATING LIST at random time intervals, does >each rating or ranking change significantly? The reason I ask is that I just >looked at the rating of "crafty" on ICC. Its blitz rating was 2817. During its >last twenty games, the range was 2798-2860 (a 62 point interval). If I limit >the range to the most popular time control during the last twenty games (5 3), >the range was 2798-2858 (a 60 point interval). Opponents in 5 3 games were >rated 2446-2816. Crafty's rating seemed to vary widely for such a limited >number of games. ICC was never meant to be a serious rating and I treat the numbers there as meaningless. There are many problems. 1)programs are allowed to change their hardware or their software 2)people can have list of people not to play and are not forced to play against specific opponents. 3)programs play games at different time control and games at different time control are counted for the same blitz rating(4 0 and 5 3 are both blitz time control)
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