Also called precision. Averaged ratio of correctly predicted labels for each instance, following the definition by Charte and Charte: https: / /journal.r-project.org / archive / 2015 - 2 / charte-charte.pdf. Fractions where the denominator becomes 0 are ignored in the average calculation.
MultilabelPPV(truth, response)matrix of true values
matrix of predicted values n = 20 set.seed(122) truth = matrix(sample(c(0,1), 60, replace = TRUE), 20, 3) response = matrix(sample(c(0,1), 60, replace = TRUE), 20, 3) MultilabelPPV(truth, response)