scikit-learn/scikit-learn — pull request #3873 by arjoly (2014-11-21 12:56:18+00:00)
Title: [MRG] ENH add coverage multilabel ranking metric

This pr adds the coverage multilabel ranking metric in scikit-learn.

It's very useful as it carries a lot of intuition on your estimator performance. This is the average number of true labels that you need to predict in order to avoid missing any true one given your y_score matrix.

@jnothman Do you see an easy way to make this with sparse csc matrices?