Keyphrases
- context free grammars
- natural language parsing
- syntactic pattern recognition
- grammatical inference
- parse tree
- tree grammars
- belief networks
- tree bank
- probabilistic inference
- graph grammars
- semantic role labeling
- phrase structure
- inference mechanism
- bayesian networks
- production rules
- natural language processing
- natural language
- inference process
- context free
- relation extraction
- inference engine
- grammar induction
- hidden markov models