Syntactic and Semantic Knowledge in the DELPHI Unification Grammar.
Robert J. BobrowRobert IngriaDavid StallardPublished in: HLT (1990)
Keyphrases
- semantic knowledge
- natural language text
- natural language
- linguistic knowledge
- parse tree
- semantic constraints
- grammar rules
- context free grammars
- semantic information
- domain knowledge
- spreading activation
- relation extraction
- knowledge sources
- context free
- automatic extraction
- phrase structure
- information extraction
- probabilistic context free grammars
- semantic network
- domain ontology
- natural language processing
- artificial intelligence
- semantic representation
- semantic relations
- wordnet
- domain specific
- expert systems
- data analysis
- decision trees