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谣言是一种待证实的信息。对不同真实度的网络谣言与正面信息的交互规律进行研究,可为高效辟谣提供科学依据,以节约辟谣成本。分析公共危机事件下的网络谣言发生机制,提出谣言真实度参数改进谣言传播公式,以百度新闻帖子数量的变化为依据,构建网络谣言传播规律的宏观模型,并进行仿真与实证分析。由实证结果可知,真实度高的谣言传播范围更广,需要更有说服力、更具有情绪引导力的正面信息才可以有效遏制。因此,应当针对谣言的真实度进行分级管理,以达到节约行政成本、精准辟谣的效果。 相似文献
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[目的/意义] 在"新冠"疫情这类突发公共卫生事件中,网络社交媒体上迅速产生大量关于疫情的言论,其中包含不少蓄意传播的谣言,不仅危害公众心理健康,而且会影响应对公共卫生事件的方案实施。识别突发公共卫生事件的谣言能够使民众正确面对危机,为社会安定、网络治理起到积极的维护作用。[方法/过程] 首先对采集到的疫情期间已被证实的谣言进行深度分析,提取谣言文本的主要特征,包括上下文特征、话题类别特征、情感程度特征、关键词特征等;然后针对文本分类模型中的文本特征表达较为单一的问题,利用不同的模型对提取的谣言文本特征进行向量化,并对各类文本特征进行加强和融合。其中通过TF-IDF计算的词向量权重在捕获上下文特征的同时,能够加强词粒度的关键词特征信息。最后,使用BiLSTM+DNN模型对融合的特征向量进行分类判别。[结果/结论] 实验结果表明,话题类别、情感程度等特征对谣言识别均有贡献,特别是经过强化后的词向量与其他特征融合后对识别准确率有明显提升,召回率、F1值等指标均达到90%以上,效果超过其他的谣言识别模型,说明笔者所构建的方法能够很好地实现对突发公共卫生事件背景下的谣言识别。 相似文献
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[目的/意义]受逆火效应影响,辟谣信息常常达不到预期效果,从信息个性化角度提出抑制逆火效应的方法,为治理网络谣言提供新策略。[方法/过程]基于信息个性化技术及认知资源匹配假说理论,通过对个性化程度不同的辟谣信息进行分组实验,验证个性化程度高低对辟谣信息及信息受众处理辟谣信息所投入的认知资源的作用影响。[结果/结论]个性化程度高的辟谣信息能够显著影响信息受众心智网络中关于谣言的原有观念及相关知识修正,而这一作用产生的原因主要是由于信息个性化程度能够正向的影响信息受众自身的认知资源分配。 相似文献
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突发事件网络谣言传播规律模型研究 总被引：3，自引：0，他引：3
分析突发事件网络谣言发生机制,以网民数量变化为研究对象,构建突发事件网络谣言传播规律的宏观模型和微观模型,利用MATALB数值仿真和相轨线分析,研究突发事件网络谣言的传播机理,探讨控制谣言传播的因素,并为政府控制网络谣言传播制定长期策略和近期策略。 相似文献
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[目的/意义]通过搜集和分析国内外社交媒体网络谣言的相关文献,以期了解社交媒体环境下网络谣言国内外的研究进展及未来的研究趋势,为网络谣言治理和学术研究提供一定的指导。[方法/过程]本文运用文献分析和知识图谱可视化分析方法,对国内外网络谣言研究的起源和发展、国内外研究热点及未来研究趋势进行对比和可视化分析。[结果/结论]从研究发展趋势看,国内外相关研究成果的数量呈递增态势,国外研究主要围绕网络谣言的传播、社交媒体网络谣言的监测、社交媒体网络谣言的传播原因进行研究;国内研究主要围绕社交媒体网络谣言的传播模型、社交媒体突发事件网络谣言、不同类型社交媒体平台的网络谣言三个方面;从研究趋势看,未来研究会主要围绕区块链技术在社交媒体网络谣言中的治理、机器学习技术在社交媒体网络谣言中应用、老年群体社交媒体网络谣言治理等。 相似文献
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The use of second screens to dual-view television and social media is exponentially increasing. As a result, television producers are increasingly augmenting television content with social media comments from viewers, which may serve as a type of real-time public opinion indicator. The current research effort utilizes two experimental studies to explore the effects of this new media production practice on viewer's attitudes and opinions. In these studies, a Twitter feed was integrated in to entertainment (Study 1) and political (Study 2) television broadcasts and manipulated to convey either positive or negative opinions of the content. Participants' opinions were found to conform to the majority opinion presented in the manipulated Twitter feed in nearly all of the analyses. Implications for dual viewing and second screen use are discussed in light of findings. 相似文献
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This study examines the frames found on Twitter during the Vancouver riots on June 15, 2011. A textual analysis was employed, and resulted in the identification of 5 frames: fandom, riot propagation, global perspectives, shame on Vancouver, and real fans vs. idiots. The identification of these frames illustrated Twitter's role as a source of news and information, and also an outlet for shaping public opinion and cultural perception. Twitter provided the opportunity to counter public perceptions of Canadian hockey fans and the rioters through displays of dissociation, embarrassment, remorse, and comparisons to substantial global events of political unrest. 相似文献
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《Government Information Quarterly》2023,40(3):101806
Digitalization has expanded the scope of citizen participation. Nevertheless, there are no conclusive findings on online citizen participation and inclusive policymaking. This study adds in line with the discussion with a fresh perspective of institutional bias. It presents new evidence by examining the process, participants, policy agenda, and sentiments of public opinions from the government-led and Internet-empowered citizen participation regarding the 2017–2035 Shanghai Master Plan. Four findings are reported based on the in-depth case study with text and sentiment analysis. First, the government-led model provides institutionalized opportunities for citizen engagement throughout the policy process, while the Internet-empowered citizen participation is characterized by contingency and ad hoc. Second, the government-led model remains elite-dominated, while the Internet empowers a wider scope of stakeholders with an open and popularized participation platform. Third, the public opinion from the Internet-empowered model often goes beyond or even against the pre-defined official principles and goals. In contrast, the civic discussion in the government-led model influences policy by changing the sequence of policy agenda or providing focus within the official setting. Fourth, citizens, especially the experts, are more likely to give positive feedback in the government-led model than the Internet-empowered approach. These findings confirm and identify the remaining institutional bias that hinders inclusive policymaking in the Internet age. Theoretically, it reminds scholars to examine the institutional arrangements regarding citizen participation carefully. Practically, it indicates that the central government could facilitate inclusive policymaking at the local level by reducing the institutional bias of the government-led approach and utilizing text and sentiment analysis to urge the local government's response to Internet-empowered public opinion. 相似文献
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Source appropriateness in denying rumors of organizational change was investigated in a laboratory context. As predicted, results revealed that the denial by the source highest in organizational position was not the most effective. Instead, the source most successful in reducing anxiety associated with the rumor and belief in the rumor was the one whose position level matched the scope of the rumor. 相似文献
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《Government Information Quarterly》2018,35(1):109-122
Despite the expectation that social media use in the public sector contributes to enhancing government responsiveness to citizens, few empirical studies exist on whether social media use actually leads to more responsive public administration in practice and how social media are used by governments to build citizen-centric governance. The purpose of this study is to examine what roles are played by mayors and public officials in social media networks to increase government responsiveness. Thus, we adopt social network analysis (SNA) to the Twitter network of public services as well as carry out a case study on interactions among the mayor, local government, and citizens via Twitter in Seoul, Korea. The research findings show that the mayor of Seoul plays the most important role as a bridging hub in the Twitter network. Specifically, the mayor serves as a bridge between different clusters of citizens and public officials as well as a hub for the most connected users in the network. The mayor's role as a bridging hub in the Twitter network contributes to enhancing government responsiveness by making possible to overcome the disconnection between citizens and the local government, and information asymmetry among the mayor, public officials, and citizens. 相似文献
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宋代社会上流传了大量的时政谣言。事实上,人们巧妙地利用谣言简练、快捷的传播特点,围绕所关注问题而展开,表达对朝政及社会诸方面的态度与看法。由于传播效果具有双刃性,宋廷不得不采取措施消解谣言带来的政治风险,故其一边布置谣言传播的政治禁区;一边建立预警、预案制度,并由此滋生出一套严密的传播与防控体系。 相似文献
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Governments aim to mitigate natural hazards' impacts through a disaster early warning system. Drawing on citizen co-production theory and resilient information infrastructures framework, we empirically examined government use of Twitter Tsunami Early Warning Civic Network and citizens' roles in co-providing timely and actionable information. The Indonesian government issued its tsunami early warning Tweet, which was “re-tweeted” without delay by its followers to their own followers to warn tsunami hazards during the 2012 earthquake. Within 15 min it reached over 4 million Twitter users. Based on our case study and social network analysis of Twitter information flows and exchanges within the network, we found that the speed and enormous reach of the government's Twitter tsunami early warnings would be significantly less without citizens' direct participation in re-tweeting, hence influencing greater control of the network. We present evidence for net-savvy citizens' co-production effects on increased government efficiency in providing time-critical public information services. 相似文献
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本文以微博时代下谣言的传播与消解为研究对象,借鉴奥尔波特(Gordon Willard All-port)模型,提出事件的重要性、事件的模糊性和信息的不对称性是构成谣言传播法则的观点,并依据此建立网络谣言传播、扩散及消解模型。 相似文献
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The “hegemonic” tradition argues that the president enjoys unparalleled power to manage news and opinion during war. This approach has dominated political communication literature on war and the media for over a generation. The war with Iraq, however, provides a major challenge to conventional wisdom. We believe that classical propaganda theory provides a useful corrective to the hegemonic perspective and offers a better way to understand the Bush administration's propaganda strategy and its impact on public opinion. Using a combination of content analysis, opinion data, and analysis of the administration's Iraq-related public addresses, we argue that the president neither dominated war news nor managed public opinion in the manner predicted by hegemonic theories. 相似文献
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有认识的人或者同一区域的人患有新冠肺炎,是否会更加相信疫情谣言?使用什么渠道会影响对谣言的信任度?本研究探讨新冠疫情中的接近性、传播渠道与谣言信任度之间的关系,在网络平台采集北京、上海、广州、武汉、成都五座城市有效样本813人份。建立中介模型研究发现:疫情接近性对谣言信任度没有直接效应,只有通过人际传播才产生显著的间接效应,通过新闻媒体和社交媒体的间接效应则不成立;同时,新闻媒体使用与疫情谣言信任度呈负相关关系,人际传播、社交媒体使用与疫情谣言信任度呈正相关关系;学历、年龄与疫情谣言信任度均是显著性负相关关系。 相似文献
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《Government Information Quarterly》2018,35(2):243-258
In the context of Internet and Communications Technology (ICT), this research investigates the acceptance of hate rumor and its consequence during a community crisis situation. Extending prior rumor research for this context, we develop and test a refined model using data collected from victims of a large scale (hate) rumor spread incident. Our data analyses present three main findings. First, during the crisis situation, platform characteristics of media synchronicity and richness of expression affected the likelihood of rumor recipients believing the false rumor to be a true message. Second, rumors received from people with closer social ties were more likely to be believed as true. Third, rumor belief during the crisis was associated with greater intensity of informational and behavioral actions. Our findings provide governments with insights to mitigate the spread of hate rumor especially under community disaster situations. Implications for research and policy are discussed. This paper contributes to the IS literature on rumor theory and its implications by explaining how diverse communication technologies are used in a community crisis, thereby opening new avenue for future research to address the negative consequences of using communication media in the complex ICT mediated world. It shows how media characteristics along with social ties affect the “politics of plausibility”. 相似文献
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Brian L. Ott 《Critical Studies in Media Communication》2017,34(1):59-68
This essay explores the changing character of public discourse in the Age of Twitter. Adopting the perspective of media ecology, the essay highlights how Twitter privileges discourse that is simple, impulsive, and uncivil. This effect is demonstrated through a case study of Donald J. Trump's Twitter feed. The essay concludes with a brief reflection on the end times: a post-truth, post-news, President Trump, Twitter-world. 相似文献
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本文基于2010-2018年10600起舆情事件,考察了事件本身属性、媒介传播、网民参与及政府干预对网络舆情热度的影响。多元分层回归模型的结果表明:1.环境和文化体育类事件网络舆情热度较高,反腐倡廉类事件网络舆情热度较低;因为大型活动和科技发现引发的舆情事件传播热度较高。2.由传统媒体、网络新闻首次曝光的舆情事件热度较低。3.出现第三方、网络谣言、网络动员的舆情事件热度较高,意见领袖的出现对网络舆情热度没有显著影响;网民舆论倾向性非常正面的舆情事件传播热度较高。4.网络舆情事件中如果国家部委进行了干预,则舆情热度较高;政府干预的时效性越差,网络舆情热度越高;政府采用新闻发布会、社交媒体回应的舆情事件热度较高,利用对外公告或文件回应的舆情事件热度较低;政府干预级数与网络舆情热度正相关。 相似文献