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arXiv 2008.11972cs.CLcs.IR
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电子商业中评论驱动问答的观点感知答案生成

Opinion-aware Answer Generation for Review-driven Question Answering in E-Commerce

The Chinese University of Hong Kong(香港中文大学)

Yang Deng, Wenxuan Zhang, Wai Lam

摘要:

在电子商业中,与产品相关的问答是一项重要而又具有挑战性的任务。这导致了对自动评论驱动的QA的巨大需求,其目的是根据不同的产品评论对用户发布的问题提供即时响应。然而,产品评论中关于个人观点的丰富信息,对于回答这些特定产品问题至关重要,在当前基于世代的评论驱动的QA研究中没有得到充分利用。在利用来自评论的意见信息来促进意见感知答案生成时,存在两个主要挑战:(i)联合建模问题和评论之间的意见化和相关信息,以捕获用于答案生成的重要信息,(ii)聚合不同的意见信息,以揭示对给定问题的共同意见。在本文中,我们解决意见感知的答案生成,共同学习答案生成和意见挖掘任务与一个统一的模型。提出了两种意见融合策略,即静态融合和动态融合,将意见挖掘过程中获得的重要意见信息提取和聚合到答案生成过程中。然后采用多视图指针生成器网络来生成针对给定产品相关问题的意见感知答案。实验结果表明,我们的方法在现实世界的电子商业QA数据集上取得了优异的性能,并有效地产生固执己见和信息丰富的答案。

英文摘要:

Product-related question answering (QA) is an important but challenging task in E-Commerce. It leads to a great demand on automatic review-driven QA, which aims at providing instant responses towards user-posted questions based on diverse product reviews. Nevertheless, the rich information about personal opinions in product reviews, which is essential to answer those product-specific questions, is underutilized in current generation-based review-driven QA studies. There are two main challenges when exploiting the opinion information from the reviews to facilitate the opinion-aware answer generation: (i) jointly modeling opinionated and interrelated information between the question and reviews to capture important information for answer generation, (ii) aggregating diverse opinion information to uncover the common opinion towards the given question. In this paper, we tackle opinion-aware answer generation by jointly learning answer generation and opinion mining tasks with a unified model. Two kinds of opinion fusion strategies, namely, static and dynamic fusion, are proposed to distill and aggregate important opinion information learned from the opinion mining task into the answer generation process. Then a multi-view pointer-generator network is employed to generate opinion-aware answers for a given product-related question. Experimental results show that our method achieves superior performance in real-world E-Commerce QA datasets, and effectively generate opinionated and informative answers.

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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