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Symmetry, Saddle Points, and Global Geometry of Nonconvex Matrix Factorization.
Xingguo Li
Zhaoran Wang
Junwei Lu
Raman Arora
Jarvis D. Haupt
Han Liu
Tuo Zhao
Published in:
CoRR (2016)
Keyphrases
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matrix factorization
saddle points
collaborative filtering
recommender systems
missing data
low rank
negative matrix factorization
scale space
nonnegative matrix factorization
critical points
factorization methods
objective function
convex optimization