Keyphrases
- tree automata
- finite automata
- lecture notes
- international conference
- regular expressions
- lecture notes in artificial intelligence
- tree languages
- finite state
- international workshop
- computer science
- ordered trees
- finite automaton
- syntactic pattern recognition
- query language
- grammatical inference
- regular tree languages
- context free grammars
- xml schema
- positive and negative
- tree structure
- hidden markov models
- artificial intelligence
- databases