Keyphrases
- user queries
- query formulation
- user defined
- database
- user specifies
- query processing
- query language
- user interaction
- result set
- query words
- user requests
- web search engines
- response time
- query suggestion
- text collections
- user experience
- complex queries
- information retrieval
- data model
- query refinement
- correct answers
- web documents
- end users
- query logs
- query evaluation
- keyword queries
- keywords
- natural language
- text documents
- search logs
- retrieval systems
- content and structure
- text mining
- collaborative filtering