These NCAA FBS Top 25 rankings are based on regression analysis using the data posted at College Football Statistics based on the Complex Invasion College Football Production Model, which I have outlined above.
So one may ask given that Louisville lost last week why they did not drop and that Clemson did lose last week, that they completely dropped from the top 25? My answer is that the production model is based on total offense and defense production relative to the other teams in the "league". Hence, Louisville's loss was a close difference where Clemson's loss was not as close in terms of relative production, so Louisville has dropped in terms of their totals and Florida State has risen in terms of their totals, but Louisville has not dropped enough for Florida State to jump over them (but are really close).
Previous Top 25 Ranks for 2013
2013 NCAA FBS Top 25 Ranking for Week 7
2013 NCAA FBS Top 25 Ranking for Week 6
2013 NCAA FBS Top 25 Ranking for Week 5
2013 NCAA FBS Top 25 Ranking for Week 4
2013 NCAA FBS Top 25 Ranking for Week 3
2013 NCAA FBS Top 25 Ranking for Week 2