Humans are accustomed to autonomously associating prior knowledge with the text in a query when answering questions. However, machines lacking cognition and common sense, is merely combination of some words. Although we can enrich semantic information given through language representation or expansion (QE), contained still insufficient. In this paper, propose an effective passage retrieval meth...

Multihop question answering has attracted extensive studies in recent years because of the emergence human annotated datasets and associated leaderboards. Recent have revealed that systems learn to exploit annotation artifacts other biases current datasets. Therefore, a model with strong interpretability should not only predict final answer, but more importantly find supporting facts’ sentences...