1. A computer-readable medium on which is embedded one or more computer programs, said one or more computer programs implementing a method for computing a count of cases in a target set classified in a class, said one or more computer programs comprising a set of instructions for: providing a classifier capable of producing a score based on a case and the class; determining one or more measures of behavior of the classifier for a plurality of classification thresholds, wherein the one or more measures of behavior indicate an ability of the classifier to classify cases into the class; selecting at least one classification threshold for the classifier based on the one or more measures of behavior; computing a score for a plurality of the cases in the target set using the classifier; and computing a count of the cases in the target set classified into the class based on the scores for the plurality of cases in the target set, the selected at least one classification threshold, and the one or more measures of behavior.