Question Answering Using Integrated Information Retrieval and Information Extraction.
Barry SchiffmanKathleen R. McKeownRalph GrishmanJames AllanPublished in: HLT-NAACL (2007)
Keyphrases
- question answering
- information retrieval
- natural language
- information extraction
- natural language processing
- question classification
- syntactic information
- cross language
- relation extraction
- qa clef
- passage retrieval
- named entities
- answer extraction
- candidate answers
- textual entailment recognition
- answer validation
- qa systems
- question answering systems
- document retrieval
- document collections
- feature selection