http://justindomke.wordpress.com/logistic-regression/
http://research.microsoft.com/en-us/um/people/minka/
http://www.dcs.bbk.ac.uk/~zheng/
http://www.cnblogs.com/vivounicorn/archive/2012/06/25/2561071.html
另外twitter也是用的stochastic gradient descent.
我发现,我这张网越来越大了,本来我是没打算去看logistic regression的,可现在感觉不继续看下去不行。