Keyphrases
- similarity graph
- response time
- flow graph
- candidate set
- database
- query processing
- higher order
- relevance feedback
- np complete
- random walk
- query formulation
- query evaluation
- range queries
- proximity graph
- horn clauses
- database queries
- first order logic
- structured data
- keywords
- retrieval systems
- query graph
- graph representation
- query expansion
- graph structure
- graph theory
- graph matching
- user interaction
- data objects
- shortest path
- data structure
- real numbers
- answering queries
- directed graph
- knowledge base
- constraint satisfaction
- search engine
- reachability queries
- information retrieval