2017

Evidence Aggregation for Answer Re-Ranking in Open-Domain Question Answering

Wang, Shuohang, Yu, Mo, Jiang, Jing et al.

Understand

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 evidence from across different sources to answer correctly.
  • In this paper, we propose two models which make use of multiple passages to generate their answers.

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