Feature Request: Pairwise Jaccard Distances

[DarioS]

If more than two sets are provided, the mean of all pairwise scores is calculated.

It would be great to be able to get a matrix of pairs, for tasks such as hierarchical clustering and pairwise distance calculations.

[m-muecke]

Please note that the similarity measures are only referring to learners that have selected_features property, see the docs: https://mlr3.mlr-org.com/reference/mlr_measures_sim.jaccard.html

If you're looking for clustering measures, please open the issue in the mlr3cluster repo