Keyphrases
- context free grammars
- grammatical inference
- context free languages
- syntactic pattern recognition
- attribute grammars
- tree automata
- context free
- covering arrays
- predicate invention
- grammar induction
- regular expressions
- xml schema
- production rules
- lexical semantics
- finite automata
- artificial intelligence
- regular languages
- formal languages
- knowledge based systems
- expert systems
- database systems