6.10.2.2.3.1.1. statsmodels.sandbox.tools.cross_val.LeaveOneLabelOut.__init__¶
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LeaveOneLabelOut.
__init__
(labels)[source]¶ Leave-One-Label_Out cross validation: Provides train/test indexes to split data in train test sets
Parameters: labels : list
List of labels
Examples
>>> from scikits.learn import cross_val >>> X = [[1, 2], [3, 4], [5, 6], [7, 8]] >>> y = [1, 2, 1, 2] >>> labels = [1, 1, 2, 2] >>> lol = cross_val.LeaveOneLabelOut(labels) >>> for train_index, test_index in lol: ... print "TRAIN:", train_index, "TEST:", test_index ... X_train, X_test, y_train, y_test = cross_val.split(train_index, test_index, X, y) ... print X_train, X_test, y_train, y_test TRAIN: [False False True True] TEST: [ True True False False] [[5 6] [7 8]] [[1 2] [3 4]] [1 2] [1 2] TRAIN: [ True True False False] TEST: [False False True True] [[1 2] [3 4]] [[5 6] [7 8]] [1 2] [1 2]