基于LDA的众筹项目在线评论主题动态演化分析  

Topic Evolution of Online Reviews for Crowdfunding Campaigns

作　　者：王伟[1] 高宁 徐玉婷 王洪伟[2] Wang Wei;Gao Ning;Xu Yuting;Wang Hongwei(Business School,Huaqiao University,Quanzhou 362021,China;School of Economics and Management,Tongji University,Shanghai 200092,China)

机构地区：[1]华侨大学工商管理学院,泉州362021 [2]同济大学经济与管理学院,上海200092

出　　处：《数据分析与知识发现》2021年第10期103-123,共21页Data Analysis and Knowledge Discovery

基　　金：国家自然科学基金项目(项目编号:72072062,71771177);福建省自然科学基金项目(项目编号:2020J01782)的研究成果之一。

摘　　要：【目的】揭示文本作者对项目的关注点以及态度变化,深入分析众筹项目在线评论主题动态演化规律。【方法】采用来自Kickstarter的6 537个科技类项目的 497 936条在线评论为语料,使用LDA进行建模,分析在线融资项目评论主题的演化过程,并使用余弦相似度得到主题状态的演化模式。【结果】融资初期在线评论聚焦于项目基本信息;融资中期聚焦于投资回报以及产品信息;融资末期聚焦于回报邮寄等。融资成功项目从项目信息描述、产品特征等过渡到等待产品以及产品到达等主题;融资失败项目主题逐渐演化为未来重启、项目前景。【局限】没有区分项目类别,未来需要尝试分析不同项目类别之间的差异。另外,仅聚焦于基于回报的众筹模式,而没有考虑其他众筹模式,如股权众筹、教育众筹等也是未来的研究方向。【结论】得到了众筹项目评论的主题强度、内容演化和状态演化,为众筹参与各方提供了丰富启示。[Objective]This paper reveals the change of uers’interests in the crowdfunding projects and analyzes the dynamic evolution of their online comments on these projects.[Methods]First,we retrieved 497,936 online comments on 6,537 technology-related projects from Kickstarter as corpus.Then,with the help of LDA model,we analyzed the topic evolution of these comments.Finally,we obtained the dynamic evolution model of the topics with the help of cosine similarity.[Results]In the initial stage of financing,the comments were mainly on basic project information.Then,the comments focused on return of investments and product information.In the final stage,these comments were on the shipping issues.For successful projects,the topics developed from project description to waiting time for products and deliveries.For the failed projects,the comments gradually evolved into the possible relaunch and prospect of a new project.[Limitations]We did not distinguish the project categories,which need to be analyzed in the future.This paper only examined the reward based crowdfunding model,which also needs to be expanded.[Conclusions]This article analyzes reviews of online crowdfunding projects and expands the application of LDA in the field of crowdfunding,which provides practical suggestion for platforms,project sponsors and investors.

关 键 词：众筹 在线评论 LDA 主题演化 主题强度 

分 类 号：TP182[自动化与计算机技术—控制理论与控制工程]