Towards Neural Machine Translation with Latent Tree Attention

James Bradbury; Richard Socher

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arXiv · 1709.01915

Towards Neural Machine Translation with Latent Tree Attention

James Bradbury·Richard Socher

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Abstract

Building models that take advantage of the hierarchical structure of language without a priori annotation is a longstanding goal in natural language processing. We introduce such a model for the task of machine translation, pairing a recurrent neural network grammar encoder with a novel attentional RNNG decoder and applying policy gradient reinforcement learning to induce unsupervised tree structures on both the source and target. When trained on character-level datasets with no explicit segmentation or parse annotation, the model learns a plausible segmentation and shallow parse, obtaining performance close to an attentional baseline.

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James Bradbury, Richard Socher. 2017-09-06. Towards Neural Machine Translation with Latent Tree Attention. https://arxiv.org/abs/1709.01915

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