Keyphrases
- privacy preserving
- matrix factorization
- recommender systems
- collaborative filtering
- privacy preserving data mining
- low rank
- privacy preservation
- vertically partitioned data
- cold start problem
- private information
- negative matrix factorization
- factorization methods
- data sparsity
- nonnegative matrix factorization
- multi party
- implicit feedback
- data privacy
- user profiles
- sensitive information
- horizontally partitioned data
- privacy preserving association rule mining
- factor analysis
- data mining
- privacy issues
- privacy concerns
- sensitive data
- private data
- cold start
- item recommendation
- scalar product
- privacy sensitive
- user preferences
- latent factors
- latent factor models
- missing data
- privacy protection