Keyphrases
- ordered trees
- unordered trees
- semi structured data
- tree structures
- mining frequent
- tree automata
- labeled trees
- equivalence class
- structured data
- tree patterns
- semistructured data
- tree structured data
- semi structured
- web mining
- database systems
- data structure
- database
- heterogeneous data
- finite state
- regular expressions
- mining algorithm
- matching algorithm
- xml data
- multi dimensional