Keyphrases
- end users
- user groups
- wide variety
- user interaction
- social communities
- information access
- mechanical turk
- amazon mechanical turk
- information sources
- user profiles
- user feedback
- rapid growth
- market segments
- highly heterogeneous
- user studies
- databases
- collaborative filtering
- social media
- recommender systems
- daily life
- information overload
- user requirements
- user satisfaction
- user model
- social web
- multiple users
- user experience
- social networks