A Question Answering Service for Information Retrieval in Cooper.
Bas GiesbersAntonio Vincenzo TaddeoWim van der VegtJan van BruggenRob KoperPublished in: COOPER (2007)
Keyphrases
- question answering
- information retrieval
- information extraction
- passage retrieval
- natural language processing
- question classification
- open domain question answering
- named entities
- qa clef
- question answering systems
- test collection
- natural language
- natural language questions
- cross language
- answering questions
- syntactic information
- information access
- tf idf
- vector space model
- multi domain
- retrieval model
- document retrieval
- query expansion
- answer extraction
- language model
- co occurrence
- expert systems
- answer validation
- search engine