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Contrastive Representation Learning for Exemplar-Guided Paraphrase Generation

2021-09-03 12:57:19
Haoran Yang, Wai Lam, Piji Li
arXiv_CL
             
Abstract

Exemplar-Guided Paraphrase Generation (EGPG) aims to generate a target sentence which conforms to the style of the given exemplar while encapsulating the content information of the source sentence. In this paper, we propose a new method with the goal of learning a better representation of the style andthe content. This method is mainly motivated by the recent success of contrastive learning which has demonstrated its power in unsupervised feature extraction tasks. The idea is to design two contrastive losses with respect to the content and the style by considering two problem characteristics during training. One characteristic is that the target sentence shares the same content with the source sentence, and the second characteristic is that the target sentence shares the same style with the exemplar. These two contrastive losses are incorporated into the general encoder-decoder paradigm. Experiments on two datasets, namely QQP-Pos and ParaNMT, demonstrate the effectiveness of our proposed constrastive losses.

Abstract (translated)

URL

https://arxiv.org/abs/2109.01484

PDF

https://arxiv.org/pdf/2109.01484.pdf

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