Keyphrases
- context free grammars
- grammatical inference
- context free languages
- syntactic pattern recognition
- covering arrays
- formal languages
- predicate invention
- attribute grammars
- regular expressions
- production rules
- context free
- grammar induction
- closure properties
- xml schema
- tree adjoining
- neural network
- definite clause
- knowledge acquisition
- natural language
- artificial intelligence
- machine learning
- database