TST a little more coverage in unsupervised metrics.
ENH clean up redundant code in pairwise
ENH more test coverage in pairwise distances
FIX more robust test for silhouette score
DOC classifier comparison: plot data without decision boundary first, better (imho) color scheme.
DOC add Nystroem kernel approximation to the references
FIX stupid mistake
FIX: MinMaxScaler on zero variance features
Simpler inline comment
Add one more test for MinMaxScaler on newly transformed data
ENH: issue warning when minmax scaling integer data + test
FIX random_state in MDS was not initialized properly
COSMIT pep8
COSMIT Typo
Improving code coverage for datasets module. Moved dataset imports inside test_data_home, because it is preferable for import errors to only affect the tests that require those imported methods.  My first commit to scikit. -bcajes
revert to original import placement style
ENH isotonic regression is now slighty more robust to noise
Added test to check whether the isotonic regression changed y when all ranks were equal
Merge pull request #1504 from NelleV/isotonic

ENH isotonic regression is now slighty more robust to noise
ENH uses the IsotonicRegression classifier instead of the method