[MRG] Add balanced accuracy score in metrics#5588

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TTRh wants to merge 7 commits intoscikit-learn:masterfrom

TTRh:balanced_accuracy_score

Commits on Jan 11, 2016

Add balanced accuracy score in metrics
Pierre Houssin
committed
Simplify balanced accuracy computation
Pierre Houssin
committed
Use confusion matrix to compute balance accuracy
Pierre Houssin
committed
Fix code format
Pierre Houssin
committed

Commits on Jan 12, 2016

Add separate section in model evaluation
Pierre Houssin
committed
Typo
Pierre Houssin
committed
Fix docstring error
Pierre Houssin
committed