Re: RPI 2010-2011 V: The "Chase" to AC & Beyond
Fantastic! I knew someone out there would have the ability and wherewithal to undertake a project like this.
I don't want to be presumptuous or anything, but I know a pretty easy error would be to forget the possibility of ties in the CCHA and ECAC consolation games. Those included?
Added them in today. They're weighted wrong though probability-wise, as KRACH doesn't seem to have a good way to estimate ties. I used the probability of a split when two games are played, but that's no where near the probability of a tie. It shouldn't matter too much for the actual analysis though, as the probability associated with each outcome are secondary to the result of RPI in that outcome for this. It'll also be easy/quick to re-generate my probabilities if someone has a better idea about how to predict ties.
After running for about an hour, the program is predicting that we have an
84.2463% chance of making the playoffs (+/- ~4%). The margin of error accounts for a number of probability-based biases. I have one computer calculating the result of each permutation in highest-to-least-likely order, and another randomly picking permutations. The random one is converging to around 82%, which is inline with the probability based method.
I'm glad the results "agree" with RPI92's pen-and-paper based 86% estimate.
Here's a data dump for the data processed so far, accounting for the 30.5% most probable permutations:
Ranking if we're "in" the tournament (84.2463% of total):
15 - 34.930720271277%
13 - 18.091683732382%
14 - 25.354367457376%
12 - 5.8607277621524%
11 - 0.0088531694667127%
Ranking if we're out of the tournament (15.7537% of total):
16 - 12.705547353595%
17 - 2.1967289450045%
15 - 0.85137130874607%
Rankings of 14 and lower where we don't make it will be found eventually, it simply hasn't processed scenarios where there are more than two outside-the-top 16 auto-bids. I'm also bemused it hasn't found any #10 rankings where we're in yet.