Keyphrases
- tree automata
- regular expressions
- finite automata
- pattern matching
- finite state
- xml schema
- syntactic pattern recognition
- query language
- tree languages
- propositional logic
- markov chain
- context free grammars
- information extraction
- finite automaton
- metadata
- regular tree languages
- database
- matching algorithm
- dynamic programming
- natural language
- high level
- machine learning