The ISR's are the results of an algorithm designed to measure the quality of a team's season to date by combining their winning percentage with the difficulty of their schedule. The algorithm computes all teams simultaneously and attempts to take advantage of inter-regional games more accurately than other rating systems.
This weeks column:
http://boydsworld.com/breadcrumbs/regionals2007.html
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W-L RPI ISR M Probs
South Carolina 42-18 11 15 17 57/29/ 3
North Carolina State 37-21 18 35 33 23/ 9/ 0
North Carolina-Charlotte 47-10 43 43 35 19/ 7/ 0
Wofford 30-31 140 177 200 1/ 0/ 0
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Basically, his numbers say Wofford has a 1% change of winning the regional and no chance of the super or world series. In comparison, the gamecocks have a 57% chance of winning the regional and 29% of the super followed by 3% chance of winning the world series.