Keyphrases
- fine grained
- user behavior
- user intent
- coarse grained
- social networks
- social networking
- user activities
- access control
- user interaction
- social network analysis
- data mining techniques
- web search
- expert systems
- user interests
- implicit feedback
- user activity
- user browsing
- user behavior patterns
- sequential patterns
- transfer learning
- user preferences
- high level
- metadata