Open-domain dialog systems have a user-centric goal: to provide humans with an engaging conversation experience. User engagement is one of the most important metrics for evaluating open-domain dialog systems, and could also be used as real-time feedback to benefit dialog policy learning. Existing work on detecting user disengagement typically requires hand-labeling many dialog samples. We propose HERALD, an efficient annotation framework that reframes the training data annotation process as a denoising problem. Specifically, instead of manually labeling training samples, we first use a set of labeling heuristics to label training samples automatically. We then denoise the weakly labeled data using the Shapley algorithm. Finally, we use the denoised data to train a user engagement detector. Our experiments show that HERALD improves annotation efficiency significantly and achieves 86% user disengagement detection accuracy in two dialog corpora.

HERALD: An Annotation Efficient Method to Detect User Disengagement in Social Conversations

**Session Chair: ** Maryam Fazel-Zarandi 
**Session Volunteer: ** Gabriella Skitalinskaya

11A: Dialog and Interactive Systems #6

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HERALD: An Annotation Efficient Method to Detect User Disengagement in Social Conversations

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