Computer Rating System Prediction Results for College Football (NCAA IA)
2009 Retrodiction Results
Through
| Rank |
System |
Pct. Correct |
Against Spread |
Absolute Error |
Bias |
Mean Square Error |
games |
suw |
sul |
atsw |
atsl |
| 1 | Least Squares w/ HFA | 0.84314 | 0.00000 | 8.3487 | 0.2736 | 120.486 | 714 | 602 | 112 | 0 | 0 |
| 2 | Edward Kambour | 0.82913 | 0.00000 | 8.7623 | 0.5477 | 129.109 | 714 | 592 | 122 | 0 | 0 |
| 3 | Least Squares | 0.80532 | 0.00000 | 9.4972 | 0.2247 | 148.888 | 714 | 575 | 139 | 0 | 0 |
| 4 | CPA Rankings | 0.79132 | 0.00000 | 9.5698 | -0.2067 | 150.610 | 714 | 565 | 149 | 0 | 0 |
| 5 | Sagarin Predictive | 0.80392 | 0.00000 | 9.7150 | 0.7855 | 153.902 | 714 | 574 | 140 | 0 | 0 |
| 6 | System Average | 0.82633 | 0.00000 | 9.6524 | 0.3864 | 154.135 | 714 | 590 | 124 | 0 | 0 |
| 7 | system Median | 0.82493 | 0.00000 | 9.6589 | 0.3472 | 154.646 | 714 | 589 | 125 | 0 | 0 |
| 8 | Stephen Kerns | 0.79552 | 0.00000 | 9.8010 | 0.9677 | 157.736 | 714 | 568 | 146 | 0 | 0 |
| 9 | Born Power Index | 0.78992 | 0.00000 | 9.9041 | 1.0303 | 158.078 | 714 | 564 | 150 | 0 | 0 |
| 10 | Laz Index | 0.80252 | 0.00000 | 9.7953 | 0.3511 | 158.911 | 714 | 573 | 141 | 0 | 0 |
| 11 | Sonny Moore | 0.79972 | 0.00000 | 9.8386 | 0.7398 | 159.226 | 714 | 571 | 143 | 0 | 0 |
| 12 | Stat Fox | 0.75910 | 0.00000 | 10.0126 | 1.6586 | 159.284 | 714 | 542 | 172 | 0 | 0 |
| 13 | Pigskin Index | 0.78992 | 0.00000 | 9.9132 | 0.5382 | 161.535 | 714 | 564 | 150 | 0 | 0 |
| 14 | Frank Alder | 0.82073 | 0.00000 | 9.9358 | 0.3487 | 162.454 | 714 | 586 | 128 | 0 | 0 |
| 15 | Payne Power Ratings | 0.82773 | 0.00000 | 9.9365 | 0.0928 | 162.893 | 714 | 591 | 123 | 0 | 0 |
| 16 | Sagarin | 0.83473 | 0.00000 | 9.9181 | 0.6455 | 163.121 | 714 | 596 | 118 | 0 | 0 |
| 17 | Massey BCS * | 0.83053 | 0.00000 | 9.8853 | 0.8813 | 163.786 | 714 | 593 | 121 | 0 | 0 |
| 18 | NutShell Sports | 0.79552 | 0.00000 | 9.9998 | 0.8335 | 164.251 | 714 | 568 | 146 | 0 | 0 |
| 19 | NationalSportsRankings | 0.77591 | 0.00000 | 9.8039 | 0.4618 | 165.187 | 714 | 554 | 160 | 0 | 0 |
| 20 | Billingsley+ | 0.80112 | 0.00000 | 9.8054 | 0.7180 | 166.083 | 714 | 572 | 142 | 0 | 0 |
| 21 | Beck Elo | 0.81092 | 0.00000 | 9.8873 | 0.1811 | 166.104 | 714 | 579 | 135 | 0 | 0 |
| 22 | Stortrends | 0.76814 | 0.00000 | 10.1856 | -0.0655 | 166.544 | 703 | 540 | 163 | 0 | 0 |
| 23 | NutShell Combo | 0.80812 | 0.00000 | 10.1149 | 0.3401 | 168.472 | 714 | 577 | 137 | 0 | 0 |
| 24 | PerformanZ Ratings | 0.81092 | 0.00000 | 10.2000 | 0.3289 | 168.966 | 714 | 579 | 135 | 0 | 0 |
| 25 | Warren Claassen | 0.82633 | 0.00000 | 10.0728 | 0.3127 | 169.502 | 714 | 590 | 124 | 0 | 0 |
| 26 | Massey Concensus Rank | 0.82353 | 0.00000 | 10.1665 | 0.8555 | 170.974 | 714 | 588 | 126 | 0 | 0 |
| 27 | Schmidt Comp. Ratings | 0.81793 | 0.00000 | 10.0645 | 0.1443 | 171.262 | 714 | 584 | 130 | 0 | 0 |
| 28 | Anderson/Hester * | 0.82913 | 0.00000 | 10.4552 | 0.7338 | 183.230 | 714 | 592 | 122 | 0 | 0 |
| 29 | Ashby AccuRatings | 0.77171 | 0.00000 | 10.6569 | 1.0623 | 183.613 | 714 | 551 | 163 | 0 | 0 |
| 30 | Martien Maas | 0.83193 | 0.00000 | 10.5164 | 0.6175 | 184.620 | 714 | 594 | 120 | 0 | 0 |
| 31 | Colley Rankings * | 0.82773 | 0.00000 | 10.6053 | 0.6938 | 184.955 | 714 | 591 | 123 | 0 | 0 |
| 32 | Covers.com | 0.79832 | 0.00000 | 10.6341 | -0.2744 | 186.175 | 714 | 570 | 144 | 0 | 0 |
| 33 | Sagarin Elo | 0.84034 | 0.00000 | 10.5056 | 0.5339 | 186.933 | 714 | 600 | 114 | 0 | 0 |
| 34 | CPA Retro | 0.82913 | 0.00000 | 10.6822 | -0.2083 | 193.188 | 714 | 592 | 122 | 0 | 0 |
| 35 | Billingsly | 0.81653 | 0.00000 | 11.0919 | 0.2098 | 204.488 | 714 | 583 | 131 | 0 | 0 |
| 36 | SuperList | 0.83193 | 0.00000 | 11.2859 | 1.1261 | 208.702 | 714 | 594 | 120 | 0 | 0 |
| 37 | Wolfe * | 0.83894 | 0.00000 | 11.4750 | 0.9808 | 219.604 | 714 | 599 | 115 | 0 | 0 |
| 38 | Nutshell Girl | 0.78711 | 0.00000 | 11.4523 | -0.1535 | 220.037 | 714 | 562 | 152 | 0 | 0 |
| 39 | Logistic Regression | 0.80952 | 0.00000 | 13.1234 | -3.6743 | 285.559 | 714 | 578 | 136 | 0 | 0 |
* This system does not make predictions. I make predictions for this
system by translating it to a new scale that allows for making predictions.
Retrodictive records are found by taking the ratings from the current week
and applying them to the entire season to date.
The ideal system would be one that has the highest correct game decisions,
has the smallest mean error(deviation from the actual game result), and has
a bias of zero.
Mean Error = average[abs(prediction-actual)]
Bias = agerage(prediction - actual)
Std. = Standard Deviation of individual game biases