Question Answering Challenge (QAC-1): An Evaluation of Question Answering Tasks at the NTCIR Workshop 3.
Jun-ichi FukumotoTsuneaki KatoFumito MasuiPublished in: New Directions in Question Answering (2003)
Keyphrases
- question answering
- question answering systems
- information retrieval
- information extraction
- natural language processing
- question classification
- evaluation metrics
- natural language
- test collection
- named entities
- passage retrieval
- open domain question answering
- natural language questions
- syntactic information
- relation extraction
- qa systems
- evaluation methodology
- cross language
- knowledge representation
- answer validation
- textual entailment recognition
- evaluation methods
- evaluation method
- automatically generated
- answer extraction
- qa clef
- sentence retrieval
- answering questions
- probabilistic model
- expert systems