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forward selection for knn

Anak Daeng answered on September 4, 2022 Popularity 9/10 Helpfulness 2/10

answer forward selection for knn

forward selection for knn

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You can change the direction using the direction parameter
direction{'forward', 'backward'}, default='forward'

>>> from sklearn.feature_selection import SequentialFeatureSelector
>>> from sklearn.neighbors import KNeighborsClassifier
>>> from sklearn.datasets import load_iris
>>> X, y = load_iris(return_X_y=True)
>>> knn = KNeighborsClassifier(n_neighbors=3)
>>> sfs = SequentialFeatureSelector(knn, n_features_to_select=3)
>>> sfs.fit(X, y)
SequentialFeatureSelector(estimator=KNeighborsClassifier(n_neighbors=3),
                          n_features_to_select=3)
>>> sfs.get_support()
array([ True, False,  True,  True])
>>> sfs.transform(X).shape
(150, 3)

Popularity 9/10 Helpfulness 2/10 Language whatever

Source: scikit-learn.org

Tags: feature-selection forward knn python selection whatever

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Contributed on Sep 04 2022

Anak Daeng

0 Answers Avg Quality 2/10

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