Add test for PatchExtractor (float value for max_patches)
Fix float value support for max_patches in PatchExtractor
ENH call asarray on returned scores and pvalues
TST ensure SelectKBest and SelectPercentile scores are best
FIX ensure SelectPercentile only removes tied features in case of ties
ENH _BaseFilter.inverse_transform should respect dtype
DOC Fix comment for _BaseFilter.inverse_transform
ENH sparse _BaseFilter.inverse_transform
FIXTST fix errors introduced to feature selection tests
DOC comment feature selection sparse inverse_transform
DOC: latex beautification

use \langle and \rangle for inner product, instead of < and >
DOC: latex beautification

use \log, \max, \min, \operatorname{argmax}, insead of versions w/o backslash
DOC: cosmit - fix latex typo
Merge pull request #1944 from jnothman/selectpercentile_limit_bug

FIX SelectPercentile limit bug
Merge pull request #1935 from jnothman/base_filter_inv_transform

Small improvements to inverse_transform used in feature_selection.
ENH Feature selection should use CSC matrices
COSMIT Remove redundant code in CountVectorizer
TST test CountVectorizer.stop_words_ value
fixed typo
COSMIT: better notation in CountVectorizer.