Keyphrases
- subject matter
- domain knowledge
- data structure
- user intent
- keywords
- database
- flow graph
- response time
- knowledge acquisition
- query processing
- web search
- user queries
- search query logs
- weighted graph
- graph structure
- directed graph
- relevance feedback
- knowledge discovery
- knowledge representation
- knowledge base
- query expansion
- data mining techniques
- range queries
- ranking algorithm
- search queries
- key concepts
- data sources
- query reformulation
- data model
- bayesian networks
- reachability queries