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- chi_square(X, y)
- This function implements the chi-square feature selection (existing method for classification in scikit-learn)
Input
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X: {numpy array}, shape (n_samples, n_features)
input data
y: {numpy array},shape (n_samples,)
input class labels
Output
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F: {numpy array}, shape (n_features,)
chi-square score for each feature
- feature_ranking(F)
- Rank features in descending order according to chi2-score, the higher the chi2-score, the more important the feature is
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