A survey on question answering technology from an information retrieval perspective.
Oleksandr KolomiyetsMarie-Francine MoensPublished in: Inf. Sci. (2011)
Keyphrases
- question answering
- information retrieval
- information extraction
- passage retrieval
- natural language processing
- cross language
- question classification
- named entities
- qa clef
- syntactic information
- open domain question answering
- semantic roles
- sentence retrieval
- natural language questions
- natural language
- question answering systems
- co occurrence
- test collection
- information seeking
- semantic information
- test set
- query expansion
- language model
- information retrieval systems
- answer validation