Keyphrases
- database
- query processing
- database queries
- decision trees
- efficient processing
- user queries
- retrieval systems
- query evaluation
- range queries
- user interaction
- response time
- data structure
- keywords
- data sources
- query expansion
- multi dimensional
- vector space
- relevance feedback
- indexing techniques
- retrieval method
- xpath queries
- tree nodes
- data objects
- complex queries
- tree patterns