Keyphrases
- user profiles
- information filtering
- user profiling
- user preferences
- user interests
- recommender systems
- web mining
- user feedback
- personalized search
- personalized web search
- collaborative filtering
- providing personalized
- concept hierarchy
- information extraction
- user behaviour
- personalized services
- semantically enriched
- user model
- individual user
- collective knowledge
- search engine query logs