I ordinarily wouldn't start this thread until much later, but at its upcoming meeting later this month, the Division 1 Women's Soccer Committee is going to be reviewing the RPI. That being the case, here are some of the questions I'm guessing the Committee will consider: 1. Game Location. Presently, game locations show up in the RPI only in the adjustment process for good wins/ties and poor ties/losses. In some other sports (including men's basketball), the "winning percentage" portion of the RPI formula weights games based on whether they are home, away, or at a neutral site. A home win counts as less than 1 win, a home loss counts as more than 1 loss, an away win counts as more than 1 win, and an away loss counts as less than 1 loss. A neutral site win or loss counts as 1 win or 1 loss. The Committee could consider making this kind of change. 2. Bonus and Penalty Adjustments. Once the NCAA computes the "normal" RPI, for some sports it makes adjustments for good wins/ties and poor ties/losses. The adjustment structure and amounts can vary from sport to sport. For Division I women's soccer, the structure has been to award, in descending order of amount, bonuses for wins against teams ranked 1 to 40 in the "normal" RPI rankings, for wins against teams ranked 41 to 80, for ties against teams ranked 1 to 40, and for ties against teams ranked 41 to 80. Within each of those groupings, the amount of the bonus depends on whether the win or tie was away, at a neutral site, or at home. Conversely, the structure has imposed mirroring penalties for poor ties and losses, with the ranking groups being the teams ranked 135 to 205, and teams ranked 206 and poorer. (The penalties for ties and losses to teams ranked 206 and poorer also apply for ties and losses to non-Division 1 teams.) The Committee could consider changing the bonus and penalty structure and/or amounts. Also, in sports in which the NCAA has moved to weighting the "winning percentage" element of the RPI based on game location, the tendency has been to eliminate the bonus and penalty adjustments altogether. The Committee thus could consider doing this. 3. Region and Conference Problem. As I've discussed many times, the RPI has a problem rating teams from different regions and also rating teams from different conferences in a single national system. The NCAA staff and the Committee are well aware of this. To try to address the conference problem, the NCAA has developed the Non-Conference RPI, which doesn't really solve the problem and is significantly less reliable than the RPI as a measure of teams' performance. Although the NCAA never has admitted, so far as I know, that the RPI also has a regional problem, I am well satisfied that the NCAA staff knows there is a significant problem and I suspect that the staff has tried to address it within the structure of the RPI. (For example, I believe that the reason RPI Element 2 is the average of a team's opponents' results against other teams is because the "against other teams" qualification slightly helps reduce the region and conference problem.) I'm guessing that the Committee will be talking about the region and conference problem at its upcoming meeting. Further, the bonus and penalty adjustments can help moderate the problem, and I'm guessing that the Committee specifically will be considering bonus and penalty variations and how they might help with the problem. I think it's going to be very interesting to see what comes out of the Committee's meeting -- if we ever are able to find out what the Committee decides. It could be consequential -- or not. One thing I know after running a great number of experiments with RPI modifications is that the RPI's basic structure is quite "rigid" and it is not possible to make reasonable modifications that will solve the region and conference problem. It might, however, be possible to make modifications, particularly to the bonus and penalty amounts, that will slightly moderate the problem. If anyone finds out exactly what the Committee has on its agenda or what the Committee decides, please post it on this thread (or pm me and I'll post it).