Finding joint probabilities in Multi Label Classification

r
probability

#1

How do we calculate the joint probability of the labels in R after modeling the dependent labels along with the features using classifiers? I am not really sure that the getPredictionProbabilities in the mlr package in R gives us the marginal probabilities of the individual labels or the conditional probability in terms of the classifier chains. Also is there any other way to find out the joint probability of the dependent labels in R in our Multi-Label Classification problem?