BGonline.org Forums

Linearity

Posted By: Tom Keith
Date: Saturday, 15 May 2010, at 12:11 p.m.

In Response To: Linearity (eXtreme Gammon)

I am not sure who came up with that formula ...

Larry Kaufman came up with the backgammon variation of Elo's formula, for use in Kent Goulding's International Rating List. FIBS picked up the Kaufman formula and it has been standard in backgammon ever since.

http://www.bkgm.com/faq/Ratings.html#how_did_the_ratings_system_get_developed_

Messages In This Thread

• Elo difference mapping to Snowie ER
  Klaus Evers -- Sunday, 9 May 2010, at 10:03 p.m.
  • Elo difference mapping to Snowie ER
    Leonardo Jerkovic -- Sunday, 9 May 2010, at 10:16 p.m.
    • Elo difference mapping to Snowie ER
      Christian Plenz -- Monday, 10 May 2010, at 2:17 a.m.
      • Elo difference mapping to Snowie ER
        Rich Munitz -- Monday, 10 May 2010, at 2:34 a.m.
        • Elo difference mapping to Snowie ER
          Iancho Hristov -- Monday, 10 May 2010, at 4:57 a.m.
        • Elo difference mapping to Snowie ER
          Neil Robins -- Monday, 10 May 2010, at 5:36 a.m.
          • Elo difference mapping to Snowie ER
            Timothy Chow -- Monday, 10 May 2010, at 3:38 p.m.
            • Elo difference mapping to Snowie ER
              Rich Munitz -- Monday, 10 May 2010, at 5:33 p.m.
            • Linearity
              Chuck Bower -- Thursday, 13 May 2010, at 7:34 p.m.
              • Linearity
                Timothy Chow -- Thursday, 13 May 2010, at 8:57 p.m.
              • Linearity
                Rich Munitz -- Thursday, 13 May 2010, at 11:46 p.m.
                • Linearity
                  eXtreme Gammon -- Friday, 14 May 2010, at 12:48 a.m.
                  • Linearity
                    eXtreme Gammon -- Friday, 14 May 2010, at 1:04 a.m.
                    • Linearity
                      Tom Keith -- Saturday, 15 May 2010, at 12:11 p.m.
  • Reminder: I was interested in Snowie Error Rate difference
    Klaus Evers -- Monday, 10 May 2010, at 7:14 a.m.
    • Reminder: I was interested in Snowie Error Rate difference
      Stick -- Monday, 10 May 2010, at 7:50 a.m.
    • Reminder: I was interested in Snowie Error Rate difference
      Neil Robins -- Monday, 10 May 2010, at 3:32 p.m.
      • Agreed: 100 elo ~ 2.6 Snowie ER
        Klaus Evers -- Monday, 10 May 2010, at 6:24 p.m.