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Abstract Details
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Activity Number:
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329
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Type:
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Topic Contributed
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Date/Time:
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Tuesday, August 2, 2011 : 10:30 AM to 12:20 PM
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Sponsor:
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Section on Statistics in Sports
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| Abstract - #300628 |
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Title:
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Ratings Central: Accurate, Automated, Bayesian Table Tennis Ratings for Clubs, Leagues, Tournaments, and Organizations
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Author(s):
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David J. Marcus*+
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Companies:
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Ratings Central
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Address:
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25 Beacon St Apt 16, Somerville, MA, 02143-4336,
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Keywords:
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sports ;
ratings ;
rankings ;
Bayesian ;
table tennis ;
Ping-Pong
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Abstract:
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Ratings Central (www.ratingscentral.com) has been providing ratings for table tennis players in the U.S. and several other countries since 2004. Players range from five-year-olds to world champions. Currently, there are over 31,000 players and 660,000 matches. The system uses a Bayesian model with event directors providing priors for unrated players, specifying them either for a group (e.g., league division, tournament, age, gender) or individually. To make the model computationally tractable, the graph of matches in an event (nodes for players, edges for matches) is modified for each player while still retaining most of the information on how a player's opponents did in the event. The system occasionally has trouble dealing with special subpopulations or players whose playing strength jumps. Although players and event directors sometimes have misconceptions about the rating system, in general they are very satisfied.
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The address information is for the authors that have a + after their name.
Authors who are presenting talks have a * after their name.
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