Keyphrases
- response time
- database
- domain knowledge
- knowledge base
- knowledge acquisition
- information retrieval
- query evaluation
- knowledge representation
- data sources
- expert systems
- knowledge management
- result set
- user queries
- query processing
- database queries
- retrieval systems
- developmental psychology
- original query
- query formulation
- complex queries
- retrieval method
- test bed
- knowledge sources
- multimedia
- knowledge sharing
- query expansion
- knowledge based systems
- case study
- information retrieval systems
- keywords
- image retrieval