ShuffleSplit的调用方式如下:
>>> n_samples = raw_data.shape[0]
>>> cv = cross_validation.ShuffleSplit(n_samples, n_iter=3,
... test_size=0.3, random_state=0)
>>> cross_validation.cross_val_score(clf, raw data, raw target, cv=cv)
...
array([ 0.97..., 0.97..., 1. ])
那么cross_validation.LeaveOneOut 的具体调用方法是什么形式的?求大神指点