Non-factoid Question Answering Experiments at NTCIR-6: Towards Answer Type Detection for Realworld Questions.
Junta MizunoTomoyosi AkibaAtsushi FujiiKatunobu ItouPublished in: NTCIR (2007)
Keyphrases
- question answering
- qa systems
- natural language questions
- answer extraction
- question answering systems
- question answer pairs
- candidate answers
- answering questions
- answer validation
- question classification
- qa clef
- information retrieval
- open domain
- natural language
- correct answers
- open domain question answering
- natural language processing
- passage retrieval
- semantic roles
- information extraction
- test collection
- evaluation methodology
- named entities
- syntactic information
- relation extraction
- evaluation metrics
- automatically generated
- sentence retrieval
- web search