scikit-learn/scikit-learn — pull request #1169 by larsmans (2012-09-19 12:11:31+00:00)
Title: Ridge cg

Replaces @fabianp's old PR #418. I haven't looked at the speed of the thing much and only tested on SciPy 0.7.2, but it solves the horrendous memory usage of `RidgeClassifier` in the 20newsgroups example.