Evidence aggregation for answer re-ranking in open-domain question answering

• Main Authors: WANG, Shuohang, YU, Mo, JIANG, Jing, ZHANG, Wei, GUO, Xiaoxiao, CHANG, Shiyu, WANG, Zhiguo, KLINGER, Tim, TESAURO, Gerald, CAMPBELL, Murray
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2018
• Subjects: Databases and Information Systems
• Online Access: https://ink.library.smu.edu.sg/sis_research/4238; https://ink.library.smu.edu.sg/context/sis_research/article/5241/viewcontent/171105116.pdf
• Institution: Singapore Management University

A popular recent approach to answering open-domain questions is to first search for question-related passages and then apply reading comprehension models to extract answers. Existing methods usually extract answers from single passages independently. But some questions require a combination of evide...