python - 我应该使用什么来代替 Bootstrap？

Question

当我运行这段代码时:

from sklearn import cross_validation
bs = cross_validation.Bootstrap(9, random_state=0)

我收到这个弃用警告:

C:\Anaconda\envs\p33\lib\site-packages\sklearn\cross_validation.py:684: DeprecationWarning: Bootstrap will no longer be supported as a cross-validation method as of version 0.15 and will be removed in 0.17
  "will be removed in 0.17", DeprecationWarning)

我应该使用什么来代替 Bootstrap ？

Answer 1

来自 the scikit-learn 0.15 release notes ，在“API 更改摘要”下

• cross_validation.Bootstrap is deprecated. cross_validation.KFold or cross_validation.ShuffleSplit are recommended instead.

来自the source code itself :

# See, e.g., http://youtu.be/BzHz0J9a6k0?t=9m38s for a motivation
# behind this deprecation
warnings.warn("Bootstrap will no longer be supported as a " +
              "cross-validation method as of version 0.15 and " +
              "will be removed in 0.17", DeprecationWarning)