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arXiv 2109.01330cs.CL
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从会话文本中检测说话人角色

Detecting Speaker Personas from Conversational Texts

Microsoft Research Asia(微软亚洲研究院);State Key Laboratory of Cognitive Intelligence, iFLYTEK Research(科大讯飞研究院认知智能国家重点实验室)

Jia-Chen Gu, Zhen-Hua Ling, Yu Wu, Quan Liu, Zhigang Chen, Xiaodan Zhu

摘要:

人物角色对对话响应预测很有用。然而,目前的研究中使用的人物角色是预先定义的,很难在对话之前获得。为了解决这个问题,我们研究了一个新的任务,命名为扬声器人物角色检测(SPD),其目的是检测扬声器人物角色的基础上,普通的会话文本。在这个任务中,一个最匹配的人物角色是从给定的会话文本的候选人。这是一个多对多的语义匹配任务,因为SPD中的上下文和人物角色都由多个句子组成。这些句子之间的长期依存和动态冗余增加了这项任务的难度。我们为SPD构建了一个数据集,称为Persona Match on Persona Chat(PMPC)。此外,我们评估了几个基线模型,并提出了话语轮廓(U2 P)匹配网络这项任务。U2 P模型以细粒度操作,将上下文和人物角色视为多个序列的集合。然后,对每个序列对进行评分,并通过聚合获得上下文-人物角色对的可解释的总得分。评估结果表明,U2 P模型的性能明显优于基准模型。

英文摘要:

Personas are useful for dialogue response prediction. However, the personas used in current studies are pre-defined and hard to obtain before a conversation. To tackle this issue, we study a new task, named Speaker Persona Detection (SPD), which aims to detect speaker personas based on the plain conversational text. In this task, a best-matched persona is searched out from candidates given the conversational text. This is a many-to-many semantic matching task because both contexts and personas in SPD are composed of multiple sentences. The long-term dependency and the dynamic redundancy among these sentences increase the difficulty of this task. We build a dataset for SPD, dubbed as Persona Match on Persona-Chat (PMPC). Furthermore, we evaluate several baseline models and propose utterance-to-profile (U2P) matching networks for this task. The U2P models operate at a fine granularity which treat both contexts and personas as sets of multiple sequences. Then, each sequence pair is scored and an interpretable overall score is obtained for a context-persona pair through aggregation. Evaluation results show that the U2P models outperform their baseline counterparts significantly.

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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