Keyphrases
- database
- response time
- retrieval accuracy
- query processing
- database queries
- query formulation
- data sources
- query expansion
- neural network
- retrieval method
- user defined
- user queries
- search queries
- keyword search
- query evaluation
- user interaction
- relevance feedback
- active learning
- search engine
- vector space
- query terms
- indexing techniques
- information retrieval
- result set
- retrieval process
- databases
- data sets