HAS-QA: Hierarchical Answer Spans Model for Open-Domain Question Answering
HAS-QA: Hierarchical Answer Spans Model for Open-Domain Question Answering
This paper is concerned with open-domain question answering (i.e., OpenQA). Recently, some works have viewed this problem as a reading comprehension (RC) task, and directly applied successful RC models to it. However, the performances of such models are not so good as that in the RC task. In our opinion, …