Keyphrases
- context free grammars
- natural language
- linguistic knowledge
- functional dependencies
- grammatical inference
- formal languages
- grammar rules
- stochastic grammar
- graph grammars
- conceptual schema
- tree adjoining
- natural language parsing
- relational databases
- database
- finite state automata
- phrase structure
- parse tree
- evolutionary algorithm
- attribute grammars
- wide coverage
- artificial intelligence