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Ellipsis and Coreference Resolution as Question Answering (arxiv.org)
2 points by sel1 on Sep 2, 2019 | hide | past | pdf | discuss on HN

In plain words: Treating a gap like "so does Mary" as a reading question ("what does Mary do"), this system finds the missing words in earlier text using question-answering tools. It beat the previous best on two gap types, raising one task's score from 70 to 86.

Abstract · Ellipsis Resolution as Question Answering: An Evaluation

Most, if not all forms of ellipsis (e.g., so does Mary) are similar to reading comprehension questions (what does Mary do), in that in order to resolve them, we need to identify an appropriate text span in the preceding discourse. Following this observation, we present an alternative approach for English ellipsis resolution relying on architectures developed for question answering (QA). We present both single-task models, and joint models trained on auxiliary QA and coreference resolution datasets, clearly outperforming the current state of the art for Sluice Ellipsis (from 70.00 to 86.01 F1) and Verb Phrase Ellipsis (from 72.89 to 78.66 F1).

Rahul Aralikatte, Matthew Lamm, Daniel Hardt, Anders Søgaard
arXiv:1908.11141 · cs.CL · submitted Aug 29, 2019 · updated Jan 19, 2021
abstract · pdf · html · To appear in EACL 2021

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