Keyphrases
- search engine
- social interaction
- web search engines
- information retrieval
- social media
- social networks
- web search
- keyword search
- information access
- social networking
- query logs
- keywords
- social behavior
- social context
- learning community
- web pages
- search result
- social relationships
- meta search engine
- online communities
- web information
- question answering systems
- retrieval functions