arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.07396cs.CLcs.LG
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面向任务的端到端对话中基于约束的知识库提取

Constraint based Knowledge Base Distillation in End-to-End Task Oriented Dialogs

IIT Delhi(印度理工学院德里分校);IBM Research(IBM研究院)

Dinesh Raghu, Atishya Jain, Mausam, Sachindra Joshi

摘要:

端到端面向任务的对话系统基于对话历史和伴随的知识库(KB)生成响应。推断与话语最相关的那些KB实体对于响应生成是至关重要的。现有技术通过对不相关的KB信息进行软过滤来扩展到大KB。在本文中,我们提出了一种新的过滤技术,包括(1)一个成对的相似性为基础的过滤器,识别相关的信息,尊重的n元结构的知识库记录。以及(2)辅助损失,其有助于分离上下文无关的KB信息。我们还提出了一个新的度量--多集实体F1,它解决了现有实体F1度量中的正确性问题。三个公开的面向任务的对话数据集上的实验结果表明,我们提出的方法优于现有的国家的最先进的模型。

英文摘要:

End-to-End task-oriented dialogue systems generate responses based on dialog history and an accompanying knowledge base (KB). Inferring those KB entities that are most relevant for an utterance is crucial for response generation. Existing state of the art scales to large KBs by softly filtering over irrelevant KB information. In this paper, we propose a novel filtering technique that consists of (1) a pairwise similarity based filter that identifies relevant information by respecting the n-ary structure in a KB record. and, (2) an auxiliary loss that helps in separating contextually unrelated KB information. We also propose a new metric -- multiset entity F1 which fixes a correctness issue in the existing entity F1 metric. Experimental results on three publicly available task-oriented dialog datasets show that our proposed approach outperforms existing state-of-the-art models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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