first commit

Author: William de Vazelhes

doc/modules/classes.rst

@@ -1113,6 +1113,7 @@ Model validation
    neighbors.RadiusNeighborsRegressor
    neighbors.NearestCentroid
    neighbors.NearestNeighbors
+   neighbors.NeighborhoodComponentAnalysis
 
 .. autosummary::
    :toctree: generated/

sklearn/neighbors/__init__.py

@@ -14,6 +14,7 @@
 from .kde import KernelDensity
 from .approximate import LSHForest
 from .lof import LocalOutlierFactor
+from .nca import NeighborhoodComponentAnalysis
 
 __all__ = ['BallTree',
            'DistanceMetric',
@@ -28,4 +29,5 @@
            'radius_neighbors_graph',
            'KernelDensity',
            'LSHForest',
-           'LocalOutlierFactor']
+           'LocalOutlierFactor',
+           'NeighborhoodComponentAnalysis']