面向在线评论的用户需求分析框架与实证研究--基于KANO模型

[目的/意义]理解用户需求是企业管理实践中的重要一环,在线评论作为用户偏好表达的重要渠道,是企业发现用户需求的重要数据来源。因此,如何从在线评论中有效挖掘出用户需求,是一个重要的研究问题。[方法/过程]文章构建了一个基于KANO模型、面向在线评论的用户需求分析框架。首先利用LDA主题模型从在线评论中抽取商品属性,然后基于BERT模型标注出不同属性上的评论短句,并对其进行情感分析,最后依据不同属性上的评论短句与情感分析结果,通过KANO模型分析用户属性需求。以手机评论数据为例对模型进行验证。[结果/结论]将商品属性分为必备属性、期望属性、魅力属性与无差异属性四类,并以可视化结果呈现。实验结果表明面向在线评论的用户需求分析框架能够有效提取在线评论中用户的属性需求信息,为企业提供产品改进策略参考。[局限]样本数据集有限,存在不均衡状况。     

基于用户认知框架的商品知识融合实证研究

[目的/意义]旨在改善在线商品信息描述,降低用户认知负担,提升在线购物效率。采用框架描述法构建用户认知框架,在此基础上实现商品知识融合,以期解决在线商品信息的冲突矛盾和冗余问题。[方法/过程]采集数码相机在线评论信息,以框架法进行用户认知框架表示,利用规则融合方法构建商品知识融合模型,进行了用户认知框架的融合模型验证和效果分析。[结果/结论]知识融合能解决商品信息冗余问题,能填补空值型商品知识信息,减少电商平台商品信息描述流量成本,帮助用户理解商品知识矛盾问题,提升电商平台商品知识描述和呈现质量。     

基于在线评论的企业竞争情报需求挖掘研究

[目的/意义] 提出一种基于在线产品评论的竞争情报挖掘框架,为企业改进产品设计和制定竞争策略提供参考。[方法/过程] 利用Word2vec技术构建产品特征词集合,识别用户评论主题特征。然后使用情感分析方法对评论文本进行分类,得到特征维度的评论情感。最后从产品主题特征和情感态度特征两方面进行数据分析,并以可视化结果呈现。[结果/结论] 以汽车行业的评论数据为例进行实验,结果表明该方法能够有效提取产品情报信息,帮助企业有效识别自身品牌及竞争对手的优势和劣势,为大数据环境下的竞争情报挖掘提供方法指导。     

在线用户评论行为时效特征影响因素实证研究

[目的/意义]针对我国在线用户评论习惯，探索用户评论行为对评论时间的影响作用因素，对电子商务运营商探究用户评论行为规律及探索潜在用户评论时间偏好具有重要的潜在商业价值。[方法/过程]基于TAM模型抽取在线用户评论行为时间特征规律研究的影响因素并构建模型，通过抽取消费者购买行为和评论行为的时间间隔为时间序列，通过多元线性回归模型进行假设验证。[结果/结论]通过对在线评论数据的实例验证，本文所构模型能够很好地发现在线用户评论行为对评论时间的影响作用关系，对消费者评论行为的时间特征规律发现和预测具有辅助作用。     

基于信号传递理论的在线评论有用性影响因素研究

[目的/意义]在线评论在消费者网络购物决策过程中解决信息不对称的作用日益显著,探索在线评论有用性影响因素对消费者和商家都具有重要意义。[方法/过程]以信号传递理论为框架,从与评论内容、评论者和反馈有关的信号构建在线评论有用性影响因素模型,同时考虑商品类型的调节作用,并分析了信号环境的影响。[结果/结论]通过亚马逊中国网站获取客观数据进行实证研究,发现负面评论、评论字数越多、评论含有图片、评论者对信息有披露、评论者排名越靠前、评论回应数量越多则评论有用性越高,商品类型在评论情感倾向、评论图片对评论有用性影响中起到了显著的调节作用,并且信号影响评论有用性受到信号环境的影响。     

消费者学习视角下用户问答对消费者购买行为的影响研究

[目的/意义]旨在通过问答功能为电商平台以及各个商家的管理提供指导性建议。[方法/过程]爬取京东商城中搜索型商品的在线评论与用户问答数据,从消费者学习视角出发,基于S-O-R模型,构建用户问答相关变量和消费者购买行为影响模型,采用SPSS软件通过逐步回归分析法来验证假设。[结果/结论]用户提问数量、回答长度以及回答及时性对消费者购买行为有显著影响;用户提问数量对消费者购买行为的积极影响大于在线评论的数量对消费者购买行为的积极影响。     

基于LDA主题识别与Kano模型分析的用户需求研究

【目的/意义】目前,越来越多的消费者参与在线评论进行信息交互和需求表达。从丰富的在线产品评论中 识别并分析用户需求有助于企业有针对性地提升产品及服务质量,从而推动企业可持续发展。【方法/过程】本文利 用LDA模型对在线手机评论进行评论主题及产品特征挖掘,有效识别用户需求要素。基于Kano模型设置用户需 求调查问卷,结合用户满意指数分析各项需求对用户满意度的影响,确定各类用户需求重要度和供给优先级顺 序。【结果/结论】本文将24项用户需求要素划分为6项高魅力型需求、8项低魅力型需求、3项高期望型需求、3项高 必备型需求、2项低必备型需求、2项无差异型需求,进一步提出企业产品管理的优化策略。【创新/局限】本文利用文 本挖掘方法对真实的在线评论进行用户需求分析,有效克服传统用户需求调查方法中存在的需求来源滞后及可靠 性不足等问题。此外,本文所选产品的品牌相同,后续研究可向多平台及多品牌的产品需求分析进行改进和深化。     

基于超网络和在线评论的产品竞争力分析

[目的/意义]探究在线评论中用户的产品特征观点的变化,以分析产品的竞争力。[方法/过程]运用超网络建模在线评论中特征观点对及其演变关系,识别最受用户关注的产品特征及其情感倾向和演化,实现产品竞争力的分析。[结果/结论]通过对不同品牌产品进行实例验证,该模型能够识别用户关注的特征观点对及其情感倾向,发掘产品的竞争优势与不足,为企业改进产品、建立品牌口碑提供决策支持。     

在线评论中用户商品属性偏好识别方法研究

在线评论中包含的用户对商品属性的偏好信息能够为企业制定商品研发和营销策略提供依据.提出了从在线评论中识别用户对商品属性偏好信息的框架和流程,结合现有的自然语言处理技术和数据挖掘方法,利用国内大型电子商务网站上用户对计算机商品的在线评论文本为研究对象,通过实例详细阐述了在线评论中用户对商品属性偏好信息的识别技术和方法,实证了本文提出的框架与流程的可行性和有效性.     

基于Canopy-Kmeans的移动商务用户需求聚合挖掘及分析研究

【目的/意义】为了协助商家和平台获取移动商务在线评论中的用户需求,解决在线评论过载导致用户需求 提取困难等问题。【方法/过程】本文首先获取原始在线评论数据集进行文本预处理和清洗;然后,深入语义层面基 于改进后的 Canopy-Kmeans算法实现用户需求聚合;最后,以聚合结果为层级指标设计 Kano问卷,用重要性判别 方法和用户满意度指数优化用户需求分类标准,实现用户需求的高效聚合和精准挖掘。【结果/结论】通过实验结果 对比分析发现与基于语义的传统聚类方法相比,本文设计的移动商务用户需求聚合与挖掘方法的聚类结果更清晰 合理,能够获取更精准和细化的用户需求。【创新/局限】借助Word2vec模型从语义的视角分析用户需求,提出基于 Canopy-Kmeans算法的用户需求聚合挖掘模型,但选取的研究对象和数据规模较为有限,下一步将扩大在线商品 评论的研究范围及实验数据规模。     

To serve and promote science development via innovation

CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Stern-Gerlach effect goes chiral

Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）.