explained_variance_ratio_ in sklearn.discriminant_analysis

Question

我正在尝试在sklearn 17.1中使用explained_variance_ratio_。

在sklearn文档中，它被描述为LinearDiscriminationAnalysis类的属性。

但是如何应用呢？

我的代码是

from sklearn.discriminant_analysis import LinearDiscriminantAnalysis as lda
clf = lda(solver='eigen', shrinkage = 'auto')
clf.fit((tr_train, targ_train)

基本上，我在尝试

lda.explained_variance_ratio_(tr_train)

但我有

AttributeError: 'LinearDiscriminantAnalysis' object has no attribute 'explained_variance_ratio_'

Answer 1

我认为您想要的可以通过以下方式实现：

from sklearn.discriminant_analysis import LinearDiscriminantAnalysis as lda
clf = lda(solver='eigen', shrinkage = 'auto')
clf.fit(tr_train, targ_train)
print clf.explained_variance_ratio_