DOC note that greater is better for scorer
@@ -939,8 +939,9 @@ such as:
scorer
A non-estimator callable object which evaluates an estimator on given
- test data, returning a number. See :ref:`scoring_parameter`; see also
- :term:`evaluation metric`.
+ test data, returning a number. Unlike :term:`evaluation metrics`,
+ a greater returned number must correspond with a *better* score.
+ See :ref:`scoring_parameter`.
Further examples:
