Keyphrases
- context free grammars
- question answering
- language identification
- natural language
- grammar rules
- wide coverage
- linguistic knowledge
- databases
- decision trees
- linguistically motivated
- graph grammars
- tree adjoining grammar
- spanish language
- probabilistic context free grammars
- natural language parsing
- context free
- parse tree
- production rules
- multi agent
- artificial intelligence
- information retrieval
- neural network