Varifocal Question Generation for Fact-checking. (arXiv:2210.12400v1 [cs.CL])

Fact-checking requires retrieving evidence related to a claim under
investigation. The task can be formulated as question generation based on a
claim, followed by question answering. However, recent question generation
approaches assume that the answer is known and typically contained in a passage
given as input, whereas such passages are what is being sought when verifying a
claim. In this paper, we present {\it Varifocal}, a method that generates
questions based on different focal points within a given claim, i.e.\ …

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