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

(1)、Variance Threshold(threshold =1.0)

(2)、Variance Threshold(threshold =2.0)

 

 源码:

from sklearn.feature_selection import VarianceThreshold

def var():
    var= VarianceThreshold(threshold=2.0)
    data = var.fit_transform([[0, 2, 0, 3], [0, 1, 4, 3], [0, 1, 1, 3]])
    print(data)
    return None

if __name__=="__main__":
    var()

 

posted @ 2020-04-27 10:03  皎月星辰  阅读(126)  评论(0编辑  收藏  举报