Posted by girt25 on 12/4/2011 10:46:00 AM (view original):
Posted by seble on 12/4/2011 9:45:00 AM (view original):
I'll take a closer look at the logic using the Naismith data. The move away from just using RPI was intentional though. It's a limited metric of how good a team really is, and can be very misleading. To me there's a big difference between winning/losing by 20+ points vs. winning/losing by 3 or 4 points. Maybe there's a little too much weight on opponent strength.
I'll also see what I can do about spreading out teams from the same conference, but that's not easy to do when some conferences have 7 or 8 teams in.
seble, I agree that RPI isn't by far a perfect metric, but I think the early returns are that there is significantly too much emphasis being put on who you play rather than how you actually do. A 7-20 Florida State team made the PIT, basically just as a result of getting beat up all season by their ACC brethren. That's not good and really can't happen.
Right now it seems that you've replaced one issue (over reliance on RPI) with another (over reliance on SOS, and perhaps other things, like "good" losses). And so far, the new issue seems worse than the old one -- at least that one was something that people could understand and jibed semi-reasonably with real life. But in real life, a 7-20 team would be thinking about firing their coach, not about the postseason. Ever.
As far as spreading conference teams out within a bracket, can be challenging, but no conference mates should ever be meeting up in the 2nd round. That never happened before, either.
girt, my guess is that conference mates matching up early is an unintended consequence of putting more weight in the seeding logic on SOS and margin of victory/defeat. Teams that are in conferences with a large number of human coaches are going to almost always have better SOS than ones in weaker conferences. Therefore, they will now get more teams in. Look at my conference, the Freedom, in Naismith. We got 2 teams into the NT that would have been on the bubble and may not have made it under the old seeding logic (King's with an RPI of 66 and DeSales with an RPI of 67). They are there because their SOS's were 34 and 10, respectively. What is happening is clearly strong conferneces wind up with a lot of teams with high SOSs (they schedule well in non-confernece as a group and then beat up on each other in conference play) and that ends up bunching them up when seeding starts.