Keyphrases
- context free grammars
- grammatical inference
- context free languages
- context free
- syntactic pattern recognition
- regular expressions
- formal languages
- covering arrays
- attribute grammars
- regular languages
- tree automata
- grammar induction
- tree adjoining
- predicate invention
- relational databases
- lexical semantics
- matching algorithm
- expert systems
- database systems
- decision trees