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Saturday, April 15, 2017

Bridge Now ELO rating

Using data since January 2017 I have been calculating a rating list for

http://bridge-now.com

The basic formula is 3 times your old rating plus some factor of your expected performance plus top 50 players get 1-50 points. I need help on how to work this rating as currently the top 10 players need to pass 70% in a week of hands to maintain their rating. Consistent 70% scoring in bridge is too much to maintain I think. Maybe if I change the top 50 players getting 1-50 points to top 10% of the weekly players which is currently just past 700 so 1-70 points awarded for weekly placing. I am looking to parallel to the chess ELO ratings.

Also I let the Bridge Now site method of drop 5 bad boards for over 70 hands played
factor in as the experience gained from playing lots of hands

From May 2017 I will decay inactive players by 10 points per week and use top 10% as the bonus
instead of top 50. Maybe the number of times your current rating should be higher like 5 or 7 or 10
as we are calculating every week a fresh rating.



If anyone wants the full file then email eamongalligan@eircom.net
If anyone wants their rating hidden then email same
If anyone if Irish and wants to be included on Irish list then email same
Any advice send email


Current top 50

jim me  2212.174
Karl Cashen  2190.279
Pierre DELVAULX  2141.032
Patrick 27  2093.164
MC51  2092.939
Graham Hazel  2074.603
John Horn  2044.733
Eamon Galligan  2032.851
Tudor Trocan  2030.184
B.J. O'Brien  2028.115
pinco pallino  2027.22
WBridge5 (Robot)  2023.116
Bernard CARPENTIER  2023.078
NoĆ«lle Delahaye-Levesque  2022.557
Marek.C  2022.488
David Welsh  2020.309
pietro serioi 2016.282
Jinn  2006.405
Igor Milevoj  1987.847
Paul East  1977.702
John Macdonald  1963.95
HMN_WPB  1960.717
Terry  1958.17
Etienne Delangre  1953.277
Igor Bek  1950.654
dr. Eddie  1948.755
CHARLIE  1943.769
George Kissov  1939.233
Fran Swift  1937.915
Claude Martin  1934.89
Tamara de Grady  1934.634
Yves Costel  1932.314
Jan Stavast  1919.94
Alice Bayandor  1917.697
tom gilligan  1917.401
Kerostia 1908.042
David Boxley  1907.344
Paul Johnson 1901.998
tigo jean  1896.731
Mircea Kivu  1893.477
Jens Wamsler  1890.628
M. Hermsen  1889.144
GrantK  1886.875
Baile an Mhota  1885.929
Robert Pascal  1883.836
Ewac  1878.76
James Morgan 1876.963
Martin Keller  1876.542
Jacques Bakker  1873.376
gilles lacroix                         1872

Current Top Irish ....(over 1800)

Karl Cashen  2190.279
Eamon Galligan  2032.851
B.J. O'Brien  2028.115
John Macdonald  1963.95
Fran Swift  1937.915
tom gilligan  1917.401
Jim Mullally  1868.631
billy ronan  1860.748
Maire O'Keeffe  1856.351
pat cassidy  1840.164
Patricia A Kelly  1829.433
Jeannie Fitzgerald  1817.604
Rick Crowe  1809.813






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