Symmetry, Saddle Points, and Global Optimization Landscape of Nonconvex Matrix Factorization.
Xingguo LiJunwei LuRaman AroraJarvis D. HauptHan LiuZhaoran WangTuo ZhaoPublished in: IEEE Trans. Inf. Theory (2019)
Keyphrases
- matrix factorization
- global optimization
- saddle points
- scale space
- collaborative filtering
- critical points
- low rank
- recommender systems
- particle swarm optimization
- missing data
- saddle point
- nonnegative matrix factorization
- negative matrix factorization
- multiscale
- image processing
- mixture model
- search space
- image segmentation