Singular value decomposition

From RecSysWiki
Revision as of 21:00, 11 November 2011 by Tqchen (talk | contribs) (→‎SVD in Math)
Jump to navigation Jump to search

SVD refers to singular value decomposition in linear algebra. However, in the field of collaborative filtering, SVD often means Matrix factorization.

SVD in Math

The traditional SVD can also be used as collaborative filtering algorithm. It's also named Latent Semantic Indexing(LSI) in IR.

Matrix Factorization

Please refer to Matrix factorization