382:, gives quite a lot of information on how his system works, but omits enough details to prevent someone from copying the calculations in their entirety. The Massey ratings are designed to measure past performance, not necessarily to predict future outcomes. The first challenge for any computer rating system is to account for the variability in performance. A team will not always play up to its full potential. Other random factors (officiating, bounce of the ball) may also affect the outcome of a game. The model must somehow eliminate the "noise" which obscures the true strength of a team. The second goal is to account for the differences in schedule. When there is a large disparity in schedule strength, win–loss records lose their significance. The model must evaluate games involving mismatched opponents, as well as contests between well matched teams. It is necessary to achieve a reasonable balance between rewarding teams for wins, convincing wins, and playing a tough schedule. This issue is difficult to resolve, and rating systems exist that are based on each of the extremes. The overall team rating is a merit based quantity, and is the result of applying a
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Massey's ratings came under some scrutiny, even from Massey himself in late 2008 for rating undefeated Utah ahead of then-consensus human poll #1 Alabama at the end of the season. In spite of the controversy, his ratings gained redemption after then-#6 Utah's 31–17 victory in the 2009 Sugar Bowl over
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competition, there is no way a team can play against more than a small fraction of its competitors. Therefore, in determining the participants in championship games and tournaments, it is necessary to distinguish between teams that have compiled impressive win–loss records against strong competition
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win–loss correction to the power rating. Only the score, venue, and date of each game are used to calculate the Massey ratings. Stats such as rushing yards, rebounds, or field-goal percentage are not included. Nor are game conditions such as weather, crowd noise, day/night, or
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Massey's analysis is a valuable tool for leagues that need to fairly seed playoff brackets, or schedule games that will encourage competitive play and good sportsmanship. Sports rating systems are generally used by
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of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be
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known for his development of a methodology for ranking and rating sports teams in a variety of sports. His ratings have been a part of the
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Massey first got the idea to do sports ratings as an undergraduate at
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to forecast results, but Massey is not affiliated with this industry.
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since the 1999 season. He is an assistant professor of mathematics at
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Please help to demonstrate the notability of the topic by citing
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Massey's ratings are particularly relevant in the world of
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A major contributor to this article appears to have a
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