Python Sklearn-如何计算P值

Python Sklearn-如何计算P值

只需

X, y

直接进行意义测试。使用20news和的示例

chi2

：

>>> from sklearn.datasets import fetch_20newsgroups_vectorized>>> from sklearn.feature_selection import chi2>>> data = fetch_20newsgroups_vectorized()>>> X, y = data.data, data.target>>> scores, pvalues = chi2(X, y)>>> pvaluesarray([  4.10171798e-17,   4.34003018e-01,   9.99999996e-01, ...,         9.99999995e-01,   9.99999869e-01,   9.99981414e-01])