Convex and Semi-Nonnegative Matrix Factorizations
(PDF file)
[Severel new variants of NMF with enhanced interpretability]
Chris Ding, Tao Li, Michael I. Jordan.
LBNL Tech Report 60428
Nonnegative Matrix Factorization and Probabilistic
Latent Semantic Indexing: Equivalence, Chi-square Statistic,
and a Hybrid Method
( PDF file)
Chris Ding, Tao Li, Wei Peng
Proc. of AAAI National Conf. on Artificial Intelligence (AAAI-06), July 2006.
(A poster version of this paper also appears in SIGIR 2006)
Orthogonal Nonnegative Matrix Tri-factorizations for Clustering
( PDF file)
Chris Ding, Tao Li, Wei Peng, Haesun Park
Proc Int'l Conf. on Knowledge Discovery and Data Mining (KDD 2006),
August 2006.
On the Equivalence of Nonnegative Matrix Factorization
and Spectral Clustering.
(PDF file,
PS file)
Chris Ding, Xiaofeng He, and Horst D. Simon.
Proc. SIAM Int'l Conf. Data Mining (SDM'05), pp:606-610, April 2005.