Keyphrases
- information retrieval
- query expansion
- retrieval systems
- relevance feedback
- boolean queries
- query terms
- information retrieval systems
- query processing
- response time
- query evaluation
- user queries
- language model
- data retrieval
- user interaction
- data sources
- document retrieval
- ad hoc retrieval
- query refinement
- database
- text mining
- exact match
- term selection
- distributed information retrieval
- relevance ranking
- retrieval method
- language modeling
- document collections
- test collection
- retrieval effectiveness
- ir models
- search queries
- structured queries
- query formulation
- relevant documents
- search engine
- vector space
- database systems
- range queries
- text retrieval
- inverted index
- complex queries
- retrieval process
- database queries
- learning to rank
- information seeking