Keyphrases
- twig pattern
- tree matching
- pattern queries
- pattern matching
- efficient processing
- twig queries
- join algorithms
- graph matching
- xml queries
- probabilistic xml
- probability values
- xml documents
- association graph
- expressive power
- maximum weight
- matching algorithm
- xml databases
- encoding scheme
- query processing
- xml trees
- xml data
- spatial data
- database systems
- tree nodes
- multi dimensional
- posterior probability
- range queries
- tree structure