Leverage Web-based Answer Retrieval and Hierarchical Answer Selection to Improve the Performance of Live Question Answering.
GuoShun WuMan LanPublished in: TREC (2015)
Keyphrases
- question answering
- question answering systems
- question classification
- natural language questions
- answer extraction
- answering questions
- answer validation
- candidate answers
- qa systems
- passage retrieval
- information retrieval
- document retrieval
- question answer pairs
- qa clef
- natural language processing
- information extraction
- natural language
- cross language
- knowledge base
- information retrieval systems
- sentence retrieval
- relation extraction
- cross lingual
- textual entailment
- syntactic information
- correct answers
- feature weighting
- language model
- image retrieval
- open domain question answering