Keyphrases
- natural language
- context free grammars
- attribute grammars
- linguistically motivated
- parse tree
- grammar rules
- natural language sentences
- context free
- syntactic pattern recognition
- phrase structure
- probabilistic context free grammars
- language generation
- error correction
- semantic analysis
- syntactic analysis
- dependency structure
- syntactic structures
- word order
- graph grammars
- natural language text
- relation extraction
- wide coverage
- natural language parsing
- refinement process
- syntactic semantic
- error correcting codes
- linguistic knowledge
- semantic role labeling
- dependency parsing
- broad coverage
- semantic parsing
- information retrieval
- syntactic information
- word sense disambiguation
- context sensitive
- structured data
- question answering
- co occurrence
- semantic parser
- hidden markov models
- stochastic grammar