Robustness of Meta Matrix Factorization Against Strict Privacy Constraints.
Peter MüllnerDominik KowaldElisabeth LexPublished in: CoRR (2021)
Keyphrases
- matrix factorization
- collaborative filtering
- recommender systems
- low rank
- factorization methods
- factor analysis
- nonnegative matrix factorization
- data sparsity
- missing data
- negative matrix factorization
- factorization method
- tensor factorization
- objective function
- data matrix
- stochastic gradient descent
- latent factors
- item recommendation
- constrained optimization
- probabilistic matrix factorization