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Do Answers to Boolean Questions Need Explanations? Yes

2021-12-14 22:40:28
Sara Rosenthal, Mihaela Bornea, Avirup Sil, Radu Florian, Scott McCarley
arXiv_CL
   
Abstract

Existing datasets that contain boolean questions, such as BoolQ and TYDI QA , provide the user with a YES/NO response to the question. However, a one word response is not sufficient for an explainable system. We promote explainability by releasing a new set of annotations marking the evidence in existing TyDi QA and BoolQ datasets. We show that our annotations can be used to train a model that extracts improved evidence spans compared to models that rely on existing resources. We confirm our findings with a user study which shows that our extracted evidence spans enhance the user experience. We also provide further insight into the challenges of answering boolean questions, such as passages containing conflicting YES and NO answers, and varying degrees of relevance of the predicted evidence.

Abstract (translated)

URL

https://arxiv.org/abs/2112.07772

PDF

https://arxiv.org/pdf/2112.07772.pdf

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