scikit-learn/scikit-learn — pull request #2363 by glouppe (2013-08-13 21:04:07+00:00)
Title: FIX: release reference to X in _tree.splitter

Not releasing X in _tree.splitter seems to lead to memory issues. I suspect this to happen when `bootstrap=True`, such that all bootstrap samples are kept in memory.

I am merging this if Travis is happy.