Assessing the Impact of Thesaurus-Based Expansion Techniques in QA-Centric IR.
Luís SarmentoJorge TeixeiraEugénio C. OliveiraPublished in: CLEF (2008)
Keyphrases
- information retrieval
- information retrieval systems
- question answering
- query expansion
- passage retrieval
- digital libraries
- natural language processing
- ir evaluation
- information access
- document collections
- relevance feedback
- domain specific
- text retrieval
- semantic relations
- information extraction
- term weighting
- keywords
- web information retrieval
- search engine