Keyphrases
- information retrieval
- query expansion
- relevance feedback
- retrieval systems
- boolean queries
- response time
- query processing
- user queries
- query refinement
- data structure
- query evaluation
- information retrieval systems
- queries and relevance judgments
- query terms
- database
- retrieval process
- language model
- ad hoc retrieval
- language modeling
- data sources
- test collection
- term selection
- query formulation
- search engine
- keywords
- extended boolean
- web retrieval
- distributed information retrieval
- document ranking
- relevant documents
- document retrieval
- query optimization
- retrieval model
- structured queries
- data retrieval
- text mining
- vector space model