scikit-learn/scikit-learn — pull request #1512 by arjoly (2013-01-03 17:28:26+00:00)
Title: [WIP] Metric classification documentation

I would like to tackle partly the issue in #1508.
In this pr, I intend to add definitions to regression and classification metrics.

Before going into the MRG state, I still have read two or three times the added to doc to find mistakes.

Furthermore, I am not sure about the documentation on `explained_variance_score`. It is a new to me.

Questions(s):

1. After this pr, I would like to add some multilabels metrics, some thought about this?
2. Why is there a `zero_one` and `zero_one_score` instead of `zero_one_loss` and `accuracy_score`?
3. Why `ClassifierMixin` uses a "homebrew" accuracy metrics in the score member?