NMFN-package {NMFN}

Non-negative Matrix Factorization - Overview

Description

Non-negative Matrix Factorization

Details

Package:	NMFN
Type:	Package
Version:	2.0
Date:	2010-01-02
License:	GPL
LazyLoad:	yes

Author(s)

Suhai (Timothy) Liu <[e-mail]> based on multiplicative updates (Lee and Seung 2001), alternating least squares and multinomial algorithms; Lars Kai Hansen's nnmf_als Matlab implementation; Torsten Hothorn's Moore-Penrose inverse function

References

Lee and Seung - Algorithms for non-negative matrix factorization. In Advances in Neural Information Processing Systems 13, 2001.

Examples

X <- matrix(1:12,3,4) 
z.mm   <- nnmf(X,3)             # 3 factors via multiplicative update
z.als  <- nnmf(X,3,'nnmf_als')  # 3 factors via alternating least square
z.prob <- nnmf(X,3,'nnmf_prob') # 3 factors via multinomial