scikit-learn/scikit-learn — pull request #519 by ogrisel (2011-12-30 09:45:23+00:00)
Title: ENH: make ShuffleSplit able to subsample the data

Add the `train_fraction` option to `ShuffleSplit`. This will be useful to easily implement the cv / training errors curves to qualitatively evaluate the under / overfitting of a model.