Keyphrases
- matrix factorization
- collaborative recommendation
- cold start problem
- recommender systems
- collaborative filtering
- personalized recommendation
- user preferences
- data sparsity
- association rules
- low rank
- user profiling
- missing data
- nonnegative matrix factorization
- factorization methods
- spreading activation
- negative matrix factorization
- implicit feedback
- cold start
- information overload
- user interests
- user profiles
- information retrieval