scikit-learn/scikit-learn — pull request #2024 by arjoly (2013-06-03 08:13:39+00:00)
Title: [MRG] ENH remove mix of multilabel input format

Remove support of mix of mulitlabel input format in `metrics.py`.
The support of mix input label might lead to ambiguity problem.

A stronger checker for mix of multilabel input type is at #1985.

This pr is ready for reviews.