Keyphrases
- query recommendation
- search engine
- query logs
- random walk
- initial query
- relevance feedback
- recommendation systems
- query expansion
- user queries
- search queries
- retrieval systems
- database
- web search engines
- information retrieval
- web search
- query formulation
- query dependent
- user interaction
- relevant documents
- information retrieval systems
- ranked list
- information extraction
- original query
- query refinement
- multimedia