A semantic approach to boost passage retrieval effectiveness for question answering.
Bahadorreza OfoghiJohn YearwoodRanadhir GhoshPublished in: ACSC (2006)
Keyphrases
- question answering
- retrieval effectiveness
- information retrieval
- natural language
- retrieval model
- passage retrieval
- test collection
- information retrieval systems
- semantic roles
- query expansion
- pseudo relevance feedback
- relevant documents
- question answering systems
- answer extraction
- average precision
- information extraction
- natural language processing
- document retrieval
- query terms
- relevance feedback
- cross language
- semantic information
- relevance judgments
- retrieved documents
- co occurrence
- semantic similarity
- language modeling
- document collections
- language model
- qa systems