官網:sklearn.feature_selection.f_classif
關於 f_classif 的數學知識參考:Sklearn中的f_classif和f_regression
sklearn.feature_selection.f_classif(X,y )
計算提供的樣本的ANOVA(方差分析) F值。
參數說明
Parameters
----------
X:{array-like, sparse matrix} shape = [n_samples, n_features]
The set of regressors that will be tested sequentially.
將依次測試的一組迴歸變量。
y:array of shape(n_samples)
The data matrix.
數據矩陣。
Returns
-------
F:array, shape = [n_features,]
The set of F values.
pva:larray, shape = [n_features,]
The set of p-values.
示例
from sklearn import feature_selection as FS
fv, pv = FS.f_classif(X, y)