Recall & Precision
'97 CHEV Cavalier, Red, 5 spd, only 7,000 miles on her. Previous owner heart broken! Asking only $11,995. #1415. JERRY SEINER MIDVALE, 566-3800
N = number of facts in source
C = number of facts declared correctly
I = number of facts declared incorrectly
(of facts available, how many did we find?)
(of facts retrieved, how many were relevant?)