Keyphrases
- user queries
- search engine
- information retrieval systems
- web search engines
- query processing
- high level
- keywords
- relevant documents
- web databases
- retrieval model
- query logs
- potentially relevant
- search queries
- query terms
- ranked list
- search result
- federated search
- web search
- retrieved documents
- query result
- original query
- retrieval systems
- multimedia
- keyword queries
- query patterns
- database