Author: Uri Blass
Date: 16:30:59 04/11/05
Go up one level in this thread
On April 11, 2005 at 18:16:40, Dann Corbit wrote: >On April 11, 2005 at 16:08:21, Uri Blass wrote: > >>On April 11, 2005 at 14:29:04, Dann Corbit wrote: >> >>>On April 11, 2005 at 13:58:03, Uri Blass wrote: >>> >>>>As far as I know the Israeli chess federation bought in the past a program to >>>>calculate rating based on their database. >>>> >>>>They do not have the source of the program(but only the exe file) and today >>>>there is a problem because they decided to change the rules but they have no >>>>money to pay to the person who wrote the program so the old rules of rating are >>>>practically used and not the new rules. >>>> >>>>Note also that I thought in the past that it may be a good idea to let everybody >>>>to download a file with all the data that they have about results of games but I >>>>understood that it is impossible because the data is only in some excel file >>>>together with other details that they do not want the public to know so they >>>>cannot give people to download the excel file. >>>> >>>>I am interested to know how other chess federations calculate rating and if you >>>>have some good idea that I can suggest to the israeli federation. >>>> >>>>I thought about some ideas but I prefer to hear first from other people. >>> >>>This is how the USCF calculated ratings at one time (don't know if it is still >>>true): >>>ftp://cap.connx.com/pub/tournament_software/USCF.C >>>ftp://cap.connx.com/pub/tournament_software/USCF.H >>>I wrote this implementation and you can use it for any purpose you like. >>> >>>This is an interesting project by Royal C. Jones to calculate Elo Ratings: >>>ftp://cap.connx.com/pub/tournament_software/prog10.cpp >>>And here is his permission to use it: >>>ftp://cap.connx.com/pub/tournament_software/Re Your chess rating systems.txt >>> >>>Elostat is a binary to calculate Elo ratings that is popular: >>>http://wbec-ridderkerk.nl/html/download/other/elostat_13.zip >>> >>>This is a very interesting project by Rémi Coulom: >>>http://remi.coulom.free.fr/Bayesian-Elo/ >>> >>>The FICS source code has the Glicko algorithm. >>>ftp://cap.connx.com/pub/chess-utils/fics.1.7.4/ >>>ftp://cap.connx.com/pub/chess-utils/FICS.DIST/ >>>http://sourceforge.net/projects/chesssrv/ >>>http://sourceforge.net/projects/chessd/ >>> >>>Recommended reading: >>>http://www.ratingtheory.com/ >>>http://www.chessmetrics.com/ >> >>Thanks for all the data. >> >>If I understand the program to calculate USCF rating is free source code by you. > >Yes. >>I still did not look at your files. >>The main problem as I see is getting the data and not calculating the rating >>based on the relevant formula. > >You just need to read the game headers. If there are no Elo rating tags, you >can set it to whatever you want. If I understand correctly it reads a pgn file. In most games that are played in tournaments in Israel no pgn is saved but only the results(the players write the game but nobody has the time to take the scoresheet of them in order to save pgn). Uri
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