Reducing the sparsity of contextual information for recommender systems.
Dusan ZeleníkMária BielikováPublished in: RecSys (2012)
Keyphrases
- contextual information
- recommender systems
- data sparsity
- user context
- context aware
- implicit feedback
- collaborative filtering
- high level
- matrix factorization
- contextual knowledge
- user preferences
- sparse representation
- contextual features
- user profiling
- semantic information
- global information
- social context
- contextual constraints
- information overload
- low level
- personalized recommendation
- context awareness
- knowledge base
- contextual factors
- user model
- user profiles
- image retrieval
- contextual cues
- context aware recommendation