Documentation
README
A detection score is a claim about the population it was computed on
What goes wrong
Two arms are scored on the same candidates, one is better, and the result ships as two areas under two curves. Areas are the least transferable statistic available. The area under a precision-recall curve moves with the positive rate; the area under an ROC curve moves with the composition of the negatives. Your candidate set is almost never the set another study scored on. So when your area and theirs disagree, neither you nor the reader can tell whether you disagree about the method or about the denominator - and the run writes the arithmetic up as a substantive contradiction of the source, which is a false claim that also displaces the true one.
This is the opening of the README. Read the full README on GitHub.