基于有监督学习的店铺类虚假评论检测

网络在线评论对于商家和顾客具有重要价值,因而日益受到虚假评论行为的冲击。作为两个重要的在线评论领域,产品类评论（如亚马逊、淘宝）和店铺类评论（如点评网、Yelp）在语言特性、评论行为等方面存在显著差异。虽然研究者们已提出大量针对产品类虚假评论的检测方法,但对于店铺类虚假评论的研究仍然较少。针对Yelp.com网站上旅店、饭店有标注的点评数据,提取并分析各种评论欺诈特征,利用多种有监督学习方法进行虚假评论检测。实验结果表明,检测精度最高可达74%,AUC值可达75%。虽然店铺类虚假评论具有极强的隐蔽性,但通过权衡检测精度和召回率,可利用有监督学习方法对店铺类虚假评论进行有效检测。     

The credibility of online news: an evaluation of the information by university students / La credibilidad de las noticias en Internet: una evaluación de la información por estudiantes universitarios

Abstract

The spread of online disinformation is one of the 10 global risks of the future according to the World Economic Forum, and 51% of experts believe that this situation will not improve in the coming years. By 2022, half of the news will be fake news. In terms of users, young people and adults have problems understanding where the information they find online comes from and what sources to trust or not. In order to ascertain the degree of credibility that young users in Andalucía give to information, this study presents the results of the evaluation of online news by university students pursuing degrees in communication and education (N = 188), using the CRAAP test. The data reveal differences in gender and degree programme in the credibility assigned to the news. The conclusion is that university students have difficulty differentiating the veracity of the sources, in line with previous studies, with fake news earning higher ratings than real news.     

从会计学视角探求假冒伪劣的根源及治理对策

假冒伪劣现象是当今社会的一大公害。从会计学的收入、成本、利润角度看，假冒伪劣商品之所以屡禁不止，主要原因在于其总成本大大低于正常商品，利润空间太大。针对这个原因，提出了一些相应的对策建议。     

试论不正当竞争行为的变幻与法律规制

在市场经济运行过程中,竞争在促进生产力发展与社会经济资源优化配置方面产生积极的作用,在经济利益的驱动下,也会出现形形色色以追求高额利润为目的的不正当竞争行为。随着市场经济的发展,我国法律明确列举的不正当竞争行为已不能涵盖市场经济中层出不穷的各种不正当手段。文章通过对新型不正当竞争行为进行分析,并借鉴其他国家的立法对不正当竞争行为提出规制建议。     

国内基层体育竞赛中运动员身份造假的现状与分析

通过对湖北省第12届中学生运动会、湖北省第11届大学生运动会、第6届全国农民运动会中114名运动员进行问卷调查,对27名教练员进行访谈调查,发现国内基层体育竞赛中运动员身份造假现象严重,其中冒名顶替、伪造身份和虚报年龄较为突出.分析得出,急功近利、道德缺失和监管不健全是促使参赛单位和运动员造假现象的主要原因.阐述了运动员身份造假现象给我国竞技体育的发展和社会造成众多不良的影响,并提出了相关建议和有针对性的解决方法.     

论高校在打击假文凭中的作用

假学历、假文凭对社会的危害比之其它犯罪有过之而无不及,破坏了人才市场公平、公正的竞争规则.从高等学校的角度来讲,片面创收导致学位文凭管理混乱.学历、学位文凭管理上出现的种种问题,虽然还不是大面积的,但严重败坏了党风和社会风气,破坏了高等学历、学位的信用.高校通过加强自身的学籍管理工作,建立完善的导师负责制和导师回避制,配合国家建立证书的多方核对系统等形式在打击假文凭的工作中将能发挥更大的作用.     

Fake News,Special Libraries and What It Means to Be American

This column is written by column editor Ilana Stonebraker and guest columnist Emily Johnson. Ilana Stonebraker is Business Information Specialist and Assistant Professor at Purdue University. Emily Johnson is the Middle School Librarian and Library Coordinator at Daystar Academy in Beijing, China. They both received an MSI from the University of Michigan. This column focuses on the “fake news” phenomenon and how it affects special libraries.     

公共危机伪信息混沌论

分析了混沌理论与公共危机伪信息管理的内在契合性,进而从时代背景、现实背景、理论背景和科学背景4个层面,深入分析了混沌理论在公共危机伪信息管理中的应用背景,最后指出了基于混沌理论研究公共危机伪信息管理问题的必要性与可行性。     

Best Practices for Journalistic Balance: Gatekeeping,Imbalance and the Fake News Era

ABSTRACT

The concepts of balance and fairness are considered pillars for ethical journalism. However, balance is not clearly defined within the working profession, and more importantly, the construction of a balanced news story is often subjective to its creator and institution, leading to calls of imbalance by both the public and political figures. This study examines the construct of balance and if there is a connection between imbalance and fake news from the perspective of news journalists within the United States. Interviews with television journalists across the U.S. show the definition of balance is widely varied, with a need to expand beyond the traditional two-sides-of-the-story model; a recognition that the expanse of the Internet has created a force of un-vetted gatekeepers allowing for imbalanced reporting, and that the threat of fake news could seriously harm balanced journalism.     

试谈治理假文凭

文章分析了假文凭的表现形式、获取的途径、产生的原因及其造成的危害，并提出了治理的对策。