Question Answering Experiments at NTCIR-5: Acquisition of Answer Evaluation Patterns and Context Processing using Passage Retrieval.
Yuichi MurataTomoyosi AkibaAtsushi FujiiKatunobu ItouPublished in: NTCIR (2005)
Keyphrases
- question answering
- passage retrieval
- question classification
- question answering systems
- natural language questions
- qa systems
- answering questions
- answer validation
- information retrieval
- answer extraction
- candidate answers
- natural language
- test collection
- document retrieval
- natural language processing
- question answer pairs
- evaluation metrics
- retrieval model
- information extraction
- language model
- contextual information
- short queries
- sentence retrieval
- audio visual
- quantitative evaluation
- cross language
- evaluation measures
- retrieval systems
- query expansion
- machine learning