Over-Parametrized Matrix Factorization in the Presence of Spurious Stationary Points.
Armin EftekhariPublished in: IEEE Trans. Signal Process. (2022)
Keyphrases
- matrix factorization
- stationary points
- collaborative filtering
- recommender systems
- low rank
- factorization methods
- fixed point
- negative matrix factorization
- missing data
- nonlinear programming
- nonnegative matrix factorization
- objective function
- constrained optimization
- mathematical programming
- convergence analysis
- low level
- tensor factorization
- multiscale
- simulated annealing
- optimality conditions