Author: Günther Simon
Date: 08:09:06 06/24/05
Go up one level in this thread
On June 24, 2005 at 10:57:55, James T. Walker wrote:
>On June 24, 2005 at 10:42:35, James T. Walker wrote:
>
>>On June 24, 2005 at 00:56:57, Uri Blass wrote:
>>
>>>On June 24, 2005 at 00:33:45, Amir wrote:
>>>
>>>>On June 24, 2005 at 00:25:03, Terry McCracken wrote:
>>>>
>>>>>On June 24, 2005 at 00:06:37, Amir wrote:
>>>>>
>>>>>>On June 23, 2005 at 23:45:59, Terry McCracken wrote:
>>>>>>
>>>>>>>On June 23, 2005 at 19:56:17, Amir wrote:
>>>>>>>
>>>>>>>>With what score Hydra would have to be beat Adams to have 3000 performance
>>>>>>>>rating? (if it's even possible at all). Hydra also played a match against Evgeny
>>>>>>>>Vladimirov. What was Hydra's performance rating in that match?
>>>>>>>>
>>>>>>>>Can we calculate Hydra's FIDE rating from these two matches against humans?
>>>>>>>
>>>>>>>No you can't calculate Hydras' rating FIDE or otherwise on so few games and get
>>>>>>>anything meaningful.
>>>>>>
>>>>>>You can calculate performance rating of the players in the match or tournament.
>>>>>>You can also probably calculate provisional FIDE rating. After this match, Hydra
>>>>>>will have at least 13 games against FIDE rated players.
>>>>>
>>>>>Then why ask the question...the part in brackets? Also, you can't get a
>>>>>meaningful performance rating or FIDE or whatever and now I'm wasting my time on
>>>>>you repeating myself!
>>>>>
>>>>>Would you like me to answer it again?? Are you trying to be annoying??
>>>>>
>>>>>Or are just trolling like I stated before?
>>>>
>>>>"Performance" ratings are not "meaningful" but you can still calculate them for
>>>>a match or tournament. My question was very clear: with what score Hydra will
>>>>have to beat Adams to get close to 3000 performance rating in *this* match. The
>>>>question was not about "meaning" but of math. If anyone knows how to calculate
>>>>performance rating, he can answer my question, regardless how meaningless the
>>>>answer is.
>>>
>>>
>>>Hydra needs to score exactly 4.92 points out of 6 games to get performance of
>>>3000.
>>>
>>>I used the following site to calculate performance
>>>
>>>http://www.uschess.org/ratings/calculator.html
>>>
>>>I printed 6 times 2737(Adams rating) and changed the total score until I got
>>>exactly 3000 after clicking performance.
>>>
>>>Uri
>>
>>Hello Uri,
>>Since Hydra cannot score 4.92 points that figure is not important. If you plug
>>4.5 into the program you get a performance rating of 2928. If you use 5 points
>>out of 6 you get a performance rating of 3017. There is nothing wrong with
>>either of these calculations that I can see.
>>Jim
>
>Of course this forumla is for USCF ratings. The FIDE uses something entirely
>different for "performance ratings".
>Jim
No, _all_ chess organisations use a quite similar method for calculating
the performance.
Actually the difference will not be more than a very few Elo.
Almost all rely on a similar precalculated table. This one is for
German DWZ, but it is identically to FIDEs'.
DWZ-Diff.P(D) betterP(D) worse DWZ-Diff.P(D) betterP(D) worse
0-3 0,50 0,50 189-197 0,75 0,25
4-10 0,51 0,49 198-206 0,76 0,24
11-17 0,52 0,48 207-215 0,77 0,23
18-25 0,53 0,47 216-225 0,78 0,22
26-32 0,54 0,46 226-235 0,79 0,21
33-39 0,55 0,45 236-245 0,80 0,20
40-46 0,56 0,44 246-256 0,81 0,19
47-53 0,57 0,43 257-267 0,82 0,18
54-61 0,58 0,42 268-278 0,83 0,17
62-68 0,59 0,41 279-290 0,84 0,16
69-76 0,60 0,40 291-302 0,85 0,15
77-83 0,61 0,39 303-315 0,86 0,14
84-91 0,62 0,38 316-328 0,87 0,13
92-98 0,63 0,37 329-344 0,88 0,12
99-106 0,64 0,36 345-357 0,89 0,11
107-113 0,65 0,35 358-374 0,90 0,10
114-121 0,66 0,34 375-391 0,91 0,09
122-129 0,67 0,33 392-411 0,92 0,08
130-137 0,68 0,32 412-432 0,93 0,07
138-145 0,69 0,31 433-456 0,94 0,06
146-153 0,70 0,30 457-484 0,95 0,05
154-162 0,71 0,29 485-517 0,96 0,04
163-170 0,72 0,28 518-559 0,97 0,03
171-179 0,73 0,27 560-619 0,98 0,02
180-188 0,74 0,26 620-735 0,99 0,01
>735 1,00 0,00
Guenther
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.