A* Search Algorithm for Question Answering.
Tatsunori MoriTomohiro OhtaKatsuyuki FujihataRyutaro KumonPublished in: NTCIR (2002)
Keyphrases
- question answering
- search algorithm
- information retrieval
- question classification
- natural language processing
- passage retrieval
- qa clef
- syntactic information
- natural language questions
- named entities
- cross language
- information extraction
- question answering systems
- natural language
- answer extraction
- open domain question answering
- relation extraction
- artificial intelligence
- semantic roles
- text classification
- answer validation