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分类依据与纠错

AI 根据所提供的论文材料归类:摘要明确以代理变量处理未观测混杂,并识别和估计多属性干预的因果效应。

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代码、数据与补充材料

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关注这篇论文的作者
Lu Cheng
Ruocheng Guo
Huan Liu

利用多模态代理变量估计在线评论多维属性的因果效应

研究问题
当消费者偏好等混杂因素不可观测时,如何识别在线评论中多个属性的因果效应,并回答属性改善后的商家热度问题?
方法与思路
作者使用消费者资料及消费者与商家的互动作为多模态代理变量,利用其信息识别和估计评论所涉及多个属性的因果效应。
材料陈述的贡献
摘要称提出多属性因果效应的识别与估计方法,并以合成和真实数据评价其有效性,展示细分属性分析的应用价值。
阅读关注点
应核对属性质量、评论表述与干预对象的对应关系,代理变量识别条件,以及合成和真实数据如何验证因果估计。
阅读边界
这是 arXiv 预印本,同行评审及接收未核实;摘要未列代理变量识别假设、效应数值或验证细节,观察性评价仍需审查。

原文摘要

Online reviews enable consumers to engage with companies and provide important feedback. Due to the complexity of the high-dimensional text, these reviews are often simplified as a single numerical score, e.g., ratings or sentiment scores. This work empirically examines the causal effects of user-generated online reviews on a granular level: we consider multiple aspects, e.g., the Food and Service of a restaurant. Understanding consumers' opinions toward different aspects can help evaluate business performance in detail and strategize business operations effectively. Specifically, we aim to answer interventional questions such as What will the restaurant popularity be if the quality w.r.t. its aspect Service is increased by 10%? The defining challenge of causal inference with observational data is the presence of "confounder", which might not be observed or measured, e.g., consumers' preference to food type, rendering the estimated effects biased and high-variance. To address this challenge, we have recourse to the multi-modal proxies such as the consumer profile information and interactions between consumers and businesses. We show how to effectively leverage the rich information to identify and estimate causal effects of multiple aspects embedded in online reviews. Empirical evaluations on synthetic and real-world data corroborate the efficacy and shed light on the actionable insight of the proposed approach.

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