scikit-learn/scikit-learn — pull request #2679 by jnothman (2013-12-19 21:57:28+00:00)
Title: [MRG] Require explicit average arg for multiclass/label P/R/F metrics

In order to avoid problems like #2094, and to avoid people unwittingly reporting weighted average, this goes towards making 'average' a required parameter for multiclass/multilabel precision, recall, f-score. Closely related to #2676.

After a deprecation cycle, we can turn the warning into an error, or make macro/micro default.