8、特征选择

用过滤法对以下数据进行特征选择:

                             [[0,2,0,3],

                              [0,1,4,3],

                              [0,1,1,3]]

要求:

1、Variance Threshold(threshold =1.0)

2、将结果截图

 

代码:

from sklearn.feature_selection import VarianceThreshold
def var():

    # var = VarianceThreshold(threshold=0.0)  #实例化
    var = VarianceThreshold(threshold=1.0)  #删除特征值是1

    data = var.fit_transform([[0,2,0,3],[0,1,4,3],[0,1,1,3]])
    print(data)
    return None

if __name__ == '__main__':
    var()

结果:

 

posted on 2020-04-27 09:31  He11o  阅读(105)  评论(0编辑  收藏  举报

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