Hi John, I didn't start a new page because I didn't want folks who see David's blog article to look for machine learning on the wiki and get a load of incomprehensible hessian-free techniques - I should have flagged this to David.

Would you mind starting off a Machine Learning page with some definition of SVR.
I used to be able to recognise a back-propagation algo but apart from that I have no neural net fu even though I had the first Rummelhart big red coffee table book. I can and will write up my notes on Yann Le Cun's work.

* [Yann Le Cun's arXiv publications](http://arxiv.org/find/all/1/all:+lecun/0/1/0/all/0/1)

Paul has also listed the 4 techniques he's been working on.