Keyphrases
- mathematical foundations
- query processing
- database
- response time
- flow graphs
- query evaluation
- user queries
- query expansion
- query graph
- skyline queries
- result set
- graph mining
- range queries
- query execution
- graph theory
- graph matching
- similarity graph
- proximity graph
- vector space
- retrieval systems
- relevance feedback
- databases
- data objects
- indexing techniques
- database queries
- retrieval method
- user defined
- complex queries
- similarity search
- graph theoretic
- user interaction
- data sources
- keywords
- reachability queries