Dual Past and Future for Neural Machine Translation

• URL: http://arxiv.org/abs/2007.07728v2
• Date: Fri, 17 Jul 2020 03:51:43 GMT
• Title: Dual Past and Future for Neural Machine Translation
• Authors: Jianhao Yan, Fandong Meng, Jie Zhou
• Abstract summary: We present a novel dual framework that leverages both source-to-target and target-to-source NMT models to provide a more direct and accurate supervision signal for the Past and Future modules. Experimental results demonstrate that our proposed method significantly improves the adequacy of NMT predictions and surpasses previous methods in two well-studied translation tasks.
• Score: 51.418245676894465
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Though remarkable successes have been achieved by Neural Machine Translation (NMT) in recent years, it still suffers from the inadequate-translation problem. Previous studies show that explicitly modeling the Past and Future contents of the source sentence is beneficial for translation performance. However, it is not clear whether the commonly used heuristic objective is good enough to guide the Past and Future. In this paper, we present a novel dual framework that leverages both source-to-target and target-to-source NMT models to provide a more direct and accurate supervision signal for the Past and Future modules. Experimental results demonstrate that our proposed method significantly improves the adequacy of NMT predictions and surpasses previous methods in two well-studied translation tasks.

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