擅长:python、mysql、java
<p>不要重新发明轮子。您可以在<code>sklearn.cross_validation</code>模块中使用函数<a href="http://scikit-learn.org/stable/modules/generated/sklearn.cross_validation.KFold.html#sklearn.cross_validation.KFold" rel="nofollow">^{<cd1>}</a>和<a href="http://scikit-learn.org/stable/modules/generated/sklearn.cross_validation.StratifiedKFold.html#sklearn.cross_validation.StratifiedKFold" rel="nofollow">^{<cd2>}</a>。在</p>
<p>参见文档:</p>
<blockquote>
<p>K-Folds cross validation iterator.</p>
<p>Provides train/test indices to split data in train test sets. Split
dataset into k consecutive folds (without shuffling).</p>
<p>Each fold is then used a validation set once while the k - 1 remaining
fold form the training set.</p>
</blockquote>