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RPI | SAGARIN | MASSEY | SAUCEDA | WHITLOCK | POMEROY | GREENFIELD | DOLPHIN | MONTGOMERY | WOBUS | GINDIN | BOYER-DeSIMONE | MARKOV | HOLLAND | MOORE | ENTROPY | SELF | HERMAN | BIHL The RPI (Rating Percentage Index) measures the strength of a team's schedule and how they do against that schedule. Other factors, such as margin of victory or location of a game, are not considered in the RPI. It is one of the main factors used by the NCAA committee to decide who to invite to the NCAA Tournament and what seed they should receive. The RPI is based 25% on team winning percentage, 50% on opponents' average winning percentage, and 25% on opponents' oppnents' average winning percentage.
The Sagarin rankings are based on only the games between the 326 Division I schools. Win/Loss records and schedule strengths are the main components of this ranking system. The strength of schedule is based on the rating of the opponent and the location of the game. Using the Sagarin Rankings, you can make predictions on upcoming games. Four points can be given to the home team in addition to their rating to calculate how much one team should be another by.
The Massey Ratings are figured by comparing teams using games they have and have not played in. A team is connected to every other team through a chain of games, some they played in and some they didn't. Therefore, a team's ranking is affected not only by games they won or lost but also by games their opponents, opponents' opponents, etc. played in. The final rankings are based on a sense of balance where each team's rating is measured equally based on their good and bad performances.
The Sauceda Rating system is based on the Elo rating formula for chess. For each basketball, there is one point to be divided among the two teams. Naturally, the largest part of that point is awarded to the winner. The larger a team's margin of victory, the bigger portion of that one point is awarded to the winner. Predictions can me made on future games by looking at teams' rankings. If a team performs better than expected, even if they lose, they can gain points in the ratings.
The Whitlock Rankings are composed using each team's win/loss record as well as their schedule value.
The only information used in this rating is the margin of victory/defeat in each game as well as the location of the game. The actual win or loss is ignored; only the margin of that win/loss is factored in. The margin of victory is capped at a certain number each season; usually that number is around 16. This rating is predictive, meaning that you can predict the winner of a game between two ranked teams based on their rating and with adjustments made for home advantage.
These rankings are compiled by finding a series rankings that tie teams together. You should be able to compare two teams by looking at their ratings and the location of the game. Those factors should aid in determining the odds of either team winning the game. Teams cannot gain a higher ranking by losing to good teams or beating weak teams consitently.
These ratings are compiled and indicate that a team that is ranked is "probably better" than all teams ranked below it. A team's ranking is computed using only wins and losses on its own schedule. Margin of victory is used only for computing a team's opponents' strength.
These rankings are based on a team's strength of schedule (based on their opponents' ratings and home court advantage), wins and losses, and average margin of victory.
Each team is ranked by their numerical rating, based on that team's win/loss performance thus far.
Each is given a "win rating" based on their won/loss record and strength of schedule.
A team's ranking doesn't not involve margin of victory, but in these ratings, more recent games are weighted more heavily.
In a very complex method, this rating is compiled using win/loss record, strength of schedule, and home court advantage.
These rankings are compiled using actual score data from teams' games. The formula rewards wins, punishes losses, and factors in results of the opponents' games throughout the season.
These ratings can be used to estimate the score difference of a game. Each team is also given a certain home court advantage rating.
The score of each game, after being adjusted for home court advantage, is fed into an equation which produces a number. A team's ranking is the average of all the numbers producted from all of their games.
Though there is little description of the factors in this ranking, it appears that the main two factors are win/loss record and strength of schedule.
Little description if provided, but it appears that the biggest factors in the Herman Ratings are win/loss record, wins over quality opponents, strength of schedule, and possibly margin of victory.
The Bihl Rankings do not take into consideration margin of victory. Instead, the rankings are based on the assumption that higher ranked teams should perform better than those not ranked as high. Therefore, teams do not gain points by playing a weak schedule and succeeding or by playing a tough schedule but not winning the games.
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Below is a list of computer rankings and ratings available for the 2003 - 2004 college basketball season. Included is a description of the ranking and the method used to come up with the rating. Click the links below to select a specific poll if you wish. To view that poll's rankings, click the "Go To Rankings" link beneath the description of that poll.