How Many Variables Are Needed to Express an Existential Positive Query?.
Simone BovaHubie ChenPublished in: ICDT (2017)
Keyphrases
- query processing
- query formulation
- query expansion
- query evaluation
- data structure
- response time
- database
- positive and negative
- user interaction
- database queries
- tree patterns
- query terms
- existentially quantified
- query interface
- retrieval method
- variable selection
- range queries
- vector space
- retrieval systems
- user queries
- keywords
- search queries
- complex queries
- co occurrence
- query execution
- probability distribution
- continuous variables
- data sources