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Here are the first Rutter Rankings of the year for games played through October 6, 2013
Complete rankings can be found here: http://math.bd.psu.edu/faculty/rutte...sRankings.html
FAQ
Q. [Insert team here, like Cornell] hasnt played a game yet. Ho'w can they be ranked?
A. The power of Bayesian statistics. Each team has a prior rating based on last year, so early season rankings are possible. As more games are played, the effect of the prior is reduced.
Q. Is home ice advantage included?
A. No. Although I have estimates of home ice advantage for both the entire division and for each team, they are not included in these rankings. It emulates the NCAA criteria in this respect.
Q. Is margin of victory (MOV) included?
A. No, just wins, losses, and ties. Again, the NCAA doesn't use margin of victory and since the games are low scoring, I haven't found a satisfactory way to include MOV.
Q. How do you include ties?
A. If you look at the web page, you will see how ties are included. In short, I estimate a region that includes a probability of a tie which is larger when the teams are closely ranked. No "tie is half a win, half a loss" simplification here.
Q. How does your method compare to RPI?
A. The two are very different. I think my system (and KRACH) are a much better reflection of the quality of teams as statistical models are used as opposed to arbitrary alegbra. But I am biased. Someday, I will do a really complete comparission of the methods.
Code:
Team Rating 1 Minnesota 3.42 2 Wisconsin 1.66 3 Clarkson 1.58 4 North Dakota 1.48 5 Boston College 1.31 6 Cornell 1.30 7 Boston Univ 1.29 8 Ohio State 1.15 9 Harvard 1.04 10 Minn. Duluth 0.90
FAQ
Q. [Insert team here, like Cornell] hasnt played a game yet. Ho'w can they be ranked?
A. The power of Bayesian statistics. Each team has a prior rating based on last year, so early season rankings are possible. As more games are played, the effect of the prior is reduced.
Q. Is home ice advantage included?
A. No. Although I have estimates of home ice advantage for both the entire division and for each team, they are not included in these rankings. It emulates the NCAA criteria in this respect.
Q. Is margin of victory (MOV) included?
A. No, just wins, losses, and ties. Again, the NCAA doesn't use margin of victory and since the games are low scoring, I haven't found a satisfactory way to include MOV.
Q. How do you include ties?
A. If you look at the web page, you will see how ties are included. In short, I estimate a region that includes a probability of a tie which is larger when the teams are closely ranked. No "tie is half a win, half a loss" simplification here.
Q. How does your method compare to RPI?
A. The two are very different. I think my system (and KRACH) are a much better reflection of the quality of teams as statistical models are used as opposed to arbitrary alegbra. But I am biased. Someday, I will do a really complete comparission of the methods.
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