remove one_hot, first try

For k_hot representation, if a dataset has the label array "integer_labels" of size (ncases, nmultis), does that mean, for *each* case in the dataset, it must have nmultis different tags of classes? Or, it just means cases in the dataset have *at most* nmultis tags of classes?

If it is the latter one, How can we deal with those cases who have less tags in the integer_labels matrix?