Keyphrases
- matrix factorization
- sparse non negative
- collaborative filtering recommender systems
- collaborative filtering
- recommender systems
- item based collaborative filtering
- low rank
- sparse coding
- nonnegative matrix factorization
- factorization methods
- negative matrix factorization
- missing data
- data sparsity
- personalized recommendation
- recommendation systems
- cold start problem
- user preferences
- implicit feedback
- object recognition
- linear combination
- generative model
- user interface