svd algorithms

2010-03-05 Thread mike bowles
I've been trying to figure out how to code an svd algorithm and I've seen some questions about svd algorithms floating around the Mahout mailing lists. I thought it might be helpful to share what I've found so far. Really large matrices require using one of the randomizing methods to get don

RE: SVD for dummies

2010-02-23 Thread mike bowles
Here's another source of understanding about svd. MIT Professor Gilbert Strang's lecture on the subject. Strang is a fine educator and gentleman and wonderfully clear with his explanation of the underlying geometry of SVD. http://videolectures.net/mit1806s05_strang_lec29/ you can also get fin

SVM algo, code, etc.

2009-11-19 Thread mike bowles
I'm a newbie here and am a little timid about raising my hand, but I do want to be helpful, so here goes. If I'm making some mistake in etiquette, please let me know (but be gentle). The most commonly used algorithm for SVM is based on work done be John Platt at Microsoft Reasearch (used for