Keyphrases
- higher order
- query language
- query complexity
- query processing
- database
- query evaluation
- database queries
- natural images
- efficient processing
- query formulation
- answering queries
- pairwise
- computational complexity
- complex queries
- user queries
- retrieval systems
- database systems
- tractable cases
- space complexity
- search queries
- query logs
- high order
- conditional random fields
- language model
- markov random field
- response time
- data sources
- search engine
- information retrieval