The fundamental thing to know is the confusion matrix. There are about a dozen terms for various descriptors of the matrix, but they all can be calculated if y

The fundamental thing to know is the confusion matrix. There are about a dozen terms for various descriptors of the matrix, but they all can be calculated if you know the confusion matrix. The Wikipedia page has a great table to describe them all: https://en.wikipedia.org/wiki/Confusion_matrix https://en.wikipedia.org/wiki/Confusion_matrix You can see from that that sensitivity and recall are the same thing, but specificity and precision are not.