Author: Keith Ian Price
Date: 08:51:55 07/10/03
Go up one level in this thread
On July 10, 2003 at 02:19:15, Tony Werten wrote: >On July 09, 2003 at 19:12:13, Keith Ian Price wrote: > >>On July 09, 2003 at 18:25:30, Jeroen van Dorp wrote: >> >>>On July 09, 2003 at 16:43:27, Keith Ian Price wrote: >>> >>> >>>>That is not what he said. He said the 40-point difference was meaningful, but >>>>the 2800+ rating was not, since it is not pegged to any absolute rating. >>> >>>As rating only tells you something about strenght differences, and nothing about >>>"absolute" strenght - whatever that may be, how can't a rating be meaningful, >>>yet a rating difference can? >>> >>> >>>J. >> >>The rating only tells about strength difference when compared to another in the >>same pool. So it is the rating difference that's important. The lack of >>importance as to the rating is whether it is 2800+ or 2700+, where the >>percentage difference between 40 point differences would be small. If someone > >If the rating is inflated by 10 % then the difference between 2 ratings is also >inflated by 10% > >This shouldn't be to difficult to check. A rating difference of 40 points should >give a certain winpercentage. Did Shredder get this winpercentage ? Or did it >only get the winpercentage against 200 points lower rated opponents ? > >Tony > >>were to say it should be 1000 instead of 2800, then it would be arguable that it >>is not meaningless, but no one I've heard from is suggesting that. >> >>kp What I meant is that if 100 points were subtracted from all programs, the relative difference between them would not be greatly affected. Future games played at those levels would show a slightly smaller point spread, of course. If they were to hack 1800 points off, without refiguring the percentage difference in point spreads, then a false comparison would be seem to be shown and it would be obvious. In this regard, the actual rating would make a difference and not be meaningless. This was in answer to Jeroen's question how could it be meaningless. I was saying this is the only way it wouldn't be meaningless. I don't remember if they recalculated the point spreads between all programs years ago when they lopped off 100 points from all SSDF scores. kp
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