Keyphrases
- query processing
- response time
- database
- data structure
- relevance feedback
- query expansion
- query evaluation
- original query
- user defined
- efficient processing
- vector space
- user queries
- data sources
- retrieval systems
- user interaction
- search queries
- query execution
- query language
- information retrieval systems
- web search
- data objects
- query answering
- database queries
- encryption scheme
- object retrieval
- answering queries