Keyphrases
- context free grammars
- grammatical inference
- context free
- context free languages
- syntactic pattern recognition
- covering arrays
- predicate invention
- production rules
- grammar induction
- formal languages
- attribute grammars
- closure properties
- regular languages
- lexical semantics
- tree automata
- neural network
- xml schema
- pattern matching
- domain knowledge
- machine learning
- data mining