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arXiv · 1805.09655

Global-Locally Self-Attentive Dialogue State Tracker

Victor Zhong·Caiming Xiong·Richard Socher
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Abstract

Dialogue state tracking, which estimates user goals and requests given the dialogue context, is an essential part of task-oriented dialogue systems. In this paper, we propose the Global-Locally Self-Attentive Dialogue State Tracker (GLAD), which learns representations of the user utterance and previous system actions with global-local modules. Our model uses global modules to share parameters between estimators for different types (called slots) of dialogue states, and uses local modules to learn slot-specific features. We show that this significantly improves tracking of rare states and achieves state-of-the-art performance on the WoZ and DSTC2 state tracking tasks. GLAD obtains 88.1% joint goal accuracy and 97.1% request accuracy on WoZ, outperforming prior work by 3.7% and 5.5%. On DSTC2, our model obtains 74.5% joint goal accuracy and 97.5% request accuracy, outperforming prior work by 1.1% and 1.0%.

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Victor Zhong, Caiming Xiong, Richard Socher. 2018-05-19. Global-Locally Self-Attentive Dialogue State Tracker. https://arxiv.org/abs/1805.09655

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