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1.
《Information processing & management》2023,60(2):103197
When public health emergencies occur, a large amount of low-credibility information is widely disseminated by social bots, and public sentiment is easily manipulated by social bots, which may pose a potential threat to the public opinion ecology of social media. Therefore, exploring how social bots affect the mechanism of information diffusion in social networks is a key strategy for network governance. This study combines machine learning methods and causal regression methods to explore how social bots influence information diffusion in social networks with theoretical support. Specifically, combining stakeholder perspective and emotional contagion theory, we proposed several questions and hypotheses to investigate the influence of social bots. Then, the study obtained 144,314 pieces of public opinion data related to COVID-19 in J city from March 1, 2022, to April 18, 2022, on Weibo, and selected 185,782 pieces of data related to the outbreak of COVID-19 in X city from December 9, 2021, to January 10, 2022, as supplement and verification. A comparative analysis of different data sets revealed the following findings. Firstly, through the STM topic model, it is found that some topics posted by social bots are significantly different from those posted by humans, and social bots play an important role in certain topics. Secondly, based on regression analysis, the study found that social bots tend to transmit information with negative sentiments more than positive sentiments. Thirdly, the study verifies the specific distribution of social bots in sentimental transmission through network analysis and finds that social bots are weaker than human users in the ability to spread negative sentiments. Finally, the Granger causality test is used to confirm that the sentiments of humans and bots can predict each other in time series. The results provide practical suggestions for emergency management under sudden public opinion and provide a useful reference for the identification and analysis of social bots, which is conducive to the maintenance of network security and the stability of social order. 相似文献
2.
《Information processing & management》2022,59(3):102935
The rapid dissemination of misinformation in social media during the COVID-19 pandemic triggers panic and threatens the pandemic preparedness and control. Correction is a crucial countermeasure to debunk misperceptions. However, the effective mechanism of correction on social media is not fully verified. Previous works focus on psychological theories and experimental studies, while the applicability of conclusions to the actual social media is unclear. This study explores determinants governing the effectiveness of misinformation corrections on social media with a combination of a data-driven approach and related theories on psychology and communication. Specifically, referring to the Backfire Effect, Source Credibility, and Audience’s role in dissemination theories, we propose five hypotheses containing seven potential factors (regarding correction content and publishers’ influence), e.g., the proportion of original misinformation and warnings of misinformation. Then, we obtain 1487 significant COVID-19 related corrections on Microblog between January 1st, 2020 and April 30th, 2020, and conduct annotations, which characterize each piece of correction based on the aforementioned factors. We demonstrate several promising conclusions through a comprehensive analysis of the dataset. For example, mentioning excessive original misinformation in corrections would not undermine people’s believability within a short period after reading; warnings of misinformation in a demanding tone make correction worse; determinants of correction effectiveness vary among different topics of misinformation. Finally, we build a regression model to predict correction effectiveness. These results provide practical suggestions on misinformation correction on social media, and a tool to guide practitioners to revise corrections before publishing, leading to ideal efficacies. 相似文献
3.
[目的/意义]新型冠状病毒肺炎疫情(简称新冠肺炎疫情)的全球蔓延引发了各领域学者对于突发公共卫生事件科学应对的思考。文章以新冠肺炎疫情为例,以微博为研究对象,旨在探讨突发公共卫生事件中公众的信息需求对于危机治理的影响机制。[方法/过程]首先,对新冠肺炎疫情及微博舆情做出阶段划分,进而利用质性分析结合层次聚类法从微博文本数据中抽取公众信息需求并跟踪其演变,最终结合相关理论探索性地建立了突发公共卫生事件公众信息需求模型。[结果/结论]突发公共卫生事件中公众的信息需求主要围绕风险认知、行为规范、情感、行为四个方面,通过社交媒体可以准确追踪公众信息需求并向公众提供所需信息,信息需求的满足最终促使公众自发参与危机治理。 相似文献
4.
We identified a lack of theoretical concepts and empirical knowledge about the perception and usage of social bots from the organizational and communication management perspective. Therefore, we first introduce social bots in the realm of communication and information management by using a profound literature review. Second, by building on mediatization theory and strategic communication, we introduce the concept of deep strategic mediatization. By surveying the attitudes towards and usage of social bots of leading European communication professionals (n = 2,247) from 49 European countries, we thirdly offer first indications how diverse European organizations in different European regions use social bots. Results indicate, that leading communication professionals in Central and Western Europe as well as Scandinavia perceive highly ethical challenges, while in Southern and Eastern Europe professionals are less skeptical regarding the usage of social bots. Only 11.5 percent (n = 257) declare their organization uses or are making plans to use social bots for strategic communication. They are used primarily for identifying and following social networks users. This refers specifically to the usage of digital traces for strategic communication purposes e.g., to identify topic area opinion leaders or social media influencers. However, this represents only a small minority of the sample – leading to the conclusion that only a small minority of organizations already practice deep strategic mediatization. 相似文献
5.
As social distancing and lockdown orders grew more pervasive, individuals increasingly turned to social media for support, entertainment, and connection to others. We posit that global health emergencies - specifically, the COVID-19 pandemic - change how and what individuals self-disclose on social media. We argue that IS research needs to consider how privacy (self-focused) and social (other-focused) calculus have moved some issues outside in (caused by a shift in what is considered socially appropriate) and others inside out (caused by a shift in what information should be shared for the public good). We identify a series of directions for future research that hold potential for furthering our understanding of online self-disclosure and its factors during health emergencies. 相似文献
6.
《Information processing & management》2019,56(3):584-608
“We the Media” networks are real time and open, and such networks lack a gatekeeper system. As netizens’ comments on emergency events are disseminated, negative public opinion topics and confrontations concerning those events also spread widely on “We the Media” networks. Gradually, this phenomenon has attracted scholarly attention, and all social circles attach importance to the phenomenon as well. In existing topic detection studies, a topic is mainly defined as an "event" from the perspective of news-media information flow, but in the “We the Media” era, there are often many different views or topics surrounding a specific public opinion event. In this paper, a study on the detection of public opinion topics in “We the Media” networks is presented, starting with the characteristics of the elements found in public opinions on “We the Media” networks; such public opinions are multidimensional, multilayered and possess multiple attributes. By categorizing the elements’ attributes using social psychology and system science categories as references, we build a multidimensional network model oriented toward the topology of public opinions on “We the Media” networks. Based on the real process by which multiple topics concerning the same event are generated and disseminated, we designed a topic detection algorithm that works on these multidimensional public opinion networks. As a case study, the “Explosion in Tianjin Port on August 12, 2015″ accident was selected to conduct empirical analyses on the algorithm's effectiveness. The theoretical and empirical research findings of this paper are summarized along the following three aspects. 1. The multidimensional network model can be used to effectively characterize the communication characteristics of multiple topics on “We the Media” networks, and it provided the modeling ideas for the present paper and for other related studies on “We the Media” public opinion networks. 2. Using the multidimensional topic detection algorithm, 70% of the public opinion topics concerning the case study event were effectively detected, which shows that the algorithm is effective at detecting topics from the information flow on “We the Media” networks. 3. By defining the psychological scores of single and paired Chinese keywords in public opinion information, the topic detection algorithm can also be used to judge the sentiment tendencies of each topic, which can facilitate a timely understanding of public opinion and reveal negative topics under discussion on “We the Media” networks. 相似文献
7.
《Information processing & management》2023,60(3):103299
Understanding the effects of gender-specific emotional responses on information sharing behaviors are of great importance for swift, clear, and accurate public health crisis communication, but remains underexplored. This study fills this gap by investigating gender-specific anxiety- and anger-related emotional responses and their effects on the virality of crisis information by creatively drawing on social role theory, integrated crisis communication modeling, and text mining. The theoretical model is tested using two datasets (Changsheng vaccine crisis with 2,423,074 textual data and COVID-19 pandemic with 893,930 textual data) collected from Weibo, a leading social media platform in China. Females express significantly high anxiety and anger levels (p value<0.001) during the Changsheng fake vaccine crisis, while express significantly higher levels of anxiety during COVID-19 than males (p value<0.001), but not anger (p value=0.13). Regression analysis suggests that the virality of crisis information is significantly strengthened when the level of anger in posts of males is high or the level of anxiety in posts of females is high for both crises. However, such gender-specific virality differences of anger/anxiety expressions are violated once females have large numbers of followers (influencers). Furthermore, the gender-specific emotional effects on crisis information are more significantly enhanced for male influencers than female influencers. This study contributes to the literature on gender-specific emotional characteristics of crisis communication on social media and provides implications for practice. 相似文献
8.
Political polarization remains perhaps the “greatest barrier” to effective COVID-19 pandemic mitigation measures in the United States. Social media has been implicated in fueling this polarization. In this paper, we uncover the network of COVID-19 related news sources shared to 30 politically biased and 2 neutral subcommunities on Reddit. We find, using exponential random graph modeling, that news sources associated with highly toxic – “rude, disrespectful” – content are more likely to be shared across political subreddits. We also find homophily according to toxicity levels in the network of online news sources. Our findings suggest that news sources associated with high toxicity are rewarded with prominent positions in the resultant network. The toxicity in COVID-19 discussions may fuel political polarization by denigrating ideological opponents and politicizing responses to the COVID-19 pandemic, all to the detriment of mitigation measures. Public health practitioners should monitor toxicity in public online discussions to familiarize themselves with emerging political arguments that threaten adherence to public health crises management. We also recommend, based on our findings, that social media platforms algorithmically promote neutral and scientific news sources to reduce toxic discussion in subcommunities and encourage compliance with public health recommendations in the fight against COVID-19. 相似文献
9.
《Information processing & management》2022,59(6):103073
With the onset of COVID-19, the pandemic has aroused huge discussions on social media like Twitter, followed by many social media analyses concerning it. Despite such an abundance of studies, however, little work has been done on reactions from the public and officials on social networks and their associations, especially during the early outbreak stage. In this paper, a total of 9,259,861 COVID-19-related English tweets published from 31 December 2019 to 11 March 2020 are accumulated for exploring the participatory dynamics of public attention and news coverage during the early stage of the pandemic. An easy numeric data augmentation (ENDA) technique is proposed for generating new samples while preserving label validity. It attains superior performance on text classification tasks with deep models (BERT) than an easier data augmentation method. To demonstrate the efficacy of ENDA further, experiments and ablation studies have also been implemented on other benchmark datasets. The classification results of COVID-19 tweets show tweets peaks trigged by momentous events and a strong positive correlation between the daily number of personal narratives and news reports. We argue that there were three periods divided by the turning points on January 20 and February 23 and the low level of news coverage suggests the missed windows for government response in early January and February. Our study not only contributes to a deeper understanding of the dynamic patterns and relationships of public attention and news coverage on social media during the pandemic but also sheds light on early emergency management and government response on social media during global health crises. 相似文献
10.
《Information processing & management》2022,59(1):102796
In the period of Corona Virus Disease 2019 (COVID-19), millions of people participate in the discussion of COVID-19 on the Internet, which can easily trigger public opinion and threaten social stability. This paper creatively proposes a multi-stage risk grading model of Internet public opinion for public health emergencies. On the basis of general public opinion risk grading analysis, the model continuously pays attention to the risk level of Internet public opinion based on the time scale of regular or major information updates. This model combines Analytic Hierarchy Process Sort II (AHPSort II) and Swing Weighting (SW) methods and proposes a new Multi-Criteria Decision Making (MCDM) method – AHPSort II-SW. Intuitionistic fuzzy number and linguistic fuzzy number are introduced into the model to evaluate the criteria that cannot be quantified. The multi-stage model is tested using more than 2,000 textual data about COVID-19 collected from Microblog, a leading social media platform in China. Seven public opinion risk assessments were conducted from January 23 to April 8, 2020. The empirical results show that in the early COVID-19 outbreak, the risk of public opinion is more serious on macroscopic view. In details, the risk of public opinion decreases slowly with time, but the emergence of important events may still increase the risk of public opinion. The analysis results are in line with the actual situation and verify the effectiveness of the method. Comparative analysis indicates the improved method is proved to be superior and effective, sensitivity analysis confirms its stability. Finally, management suggestions was provided, this study contributes to the literature on public opinion risk assessment and provides implications for practice. 相似文献
11.
[目的/意义] 区别于单一维度的情感强度测度,基于情感语义空间的食品安全舆情情感分析从立体空间角度探析情感的细粒度表征及情感焦点,对政府及有关部门提升舆情治理水平具有重要意义。[方法/过程] 运用PAD情感模型构建情感语义空间,以2018年食品安全舆情为例,一方面,将情感词映射至情感语义空间,根据位置判别情感词多维情感强度;另一方面,根据情感语义空间的表现形式划分情感层次,探寻不同情感指向特征。[结果/结论] 多维情感语义空间中,食品安全舆情情感的自我认知层愉悦度较高,表明公众认为自身对食品安全有较好的认知;舆情中社会发展和民生民意空间呈现明显的负向情绪,且网民在表达该类情感时的神经生理激活水平较高,应引起政府高度重视。食品安全舆情中的意见领袖对他人情感有较强的影响力,政府应加强与该领域意见领袖的沟通与引导。 相似文献
12.
【目的/意义】通过构建网络舆情传播分析模型,探究新冠肺炎疫情网络舆情传播过程和演化规律,提出新
冠肺炎疫情常态化背景下相关网络舆情引导和舆情治理建议。【方法/过程】基于信息生态学理论,从信息、信息人
和信息环境三要素分析舆情事件,构建信息生态学视角下的网络舆情传播分析模型。以新冠肺炎疫情中的方舱医
院事件为例,运用主题分析、社会网络分析和情感分析等方法进行实证研究,分析舆情内容演进和情感演化规律,
总结新冠肺炎疫情网络舆情传播特征。【结果/结论】结果表明,本文所构建的舆情传播分析模型能够较为全面地刻
画公众对于舆情事件的反应,分析舆情传播规律与演化趋势,挖掘不同分析维度的内在关联。【创新/局限】从信息
生态学视角出发,基于内容、用户和情感等维度构建舆情传播分析模型。下一步将结合二模网络、知识图谱等研究
方法探索新冠肺炎疫情中舆情事件之间的关联性。 相似文献
13.
《Information processing & management》2022,59(2):102820
As COVID-19 swept over the world, people discussed facts, expressed opinions, and shared sentiments about the pandemic on social media. Since policies such as travel restriction and lockdown in reaction to COVID-19 were made at different levels of the society (e.g., schools and employers) and the government, we build a large geo-tagged Twitter dataset titled UsaGeoCov19 and perform an exploratory analysis by geographic location. Specifically, we collect 650,563 unique geo-tagged tweets across the United States covering the date range from January 25 to May 10, 2020. Tweet locations enable us to conduct region-specific studies such as tweeting volumes and sentiment, sometimes in response to local regulations and reported COVID-19 cases. During this period, many people started working from home. The gap between workdays and weekends in hourly tweet volumes inspire us to propose algorithms to estimate work engagement during the COVID-19 crisis. This paper also summarizes themes and topics of tweets in our dataset using both social media exclusive tools (i.e., #hashtags, @mentions) and the latent Dirichlet allocation model. We welcome requests for data sharing and conversations for more insights.UsaGeoCov19 link: http://yunhefeng.me/geo-tagged_twitter_datasets/. 相似文献
14.
[目的/意义]重大突发事件对提高国家社会治理能力提出了新的要求,提升网络舆情态势评估能力成为创新社会治理的重要内容。[方法/过程]该文从网络舆情事件特征、关注度、传播扩散度及网民观点倾向等方面构建网络舆情态势评估指标,利用贝叶斯网络构建网络舆情态势评估模型,以“新冠肺炎疫情”事件为例,对网络舆情态势进行评估分析。[结果/结论]通过对网络舆情事件的测试,本文提出的方法具有较好的舆情态势评估效能,对“新冠肺炎疫情”相关网络舆情治理提出了建议。 相似文献
15.
【目的/意义】研究分析了突发公共卫生事件演化过程中社交媒体虚假信息的产生及时滞性扩散特征,试图
揭示虚假信息以及负面情感之间的相关关系,为疏通正确的防疫信息与民众之间的沟通渠道提供帮助。【方法/过
程】研究爬取了新冠疫情期间的虚假信息及疫情相关的微博数据,利用自动文本分析方法分析虚假信息的主题分
布;然后结合时间线索和格兰杰因果分析,展示了虚假信息相关主题微博的时滞性扩散特点;最后,分析了不同主
题下虚假信息、相关微博和负面情感三者的关系。【结果/结论】虚假信息与疫情相关内容增长趋同,但不同主题信
息的扩散力不同,甚至出现相反的时滞扩散效果;引导公众产生负向情感的虚假信息在一定程度上会引发公众的
大规模讨论。【创新/局限】从时滞性扩散的角度解读突发公共卫生事件下不同主题虚假信息的演化特征,为虚假信
息分析与治理提供了新的视角。但数据采集存在局限,虚假信息的传播渠道太过广泛,相关信息难以收集完整。 相似文献
16.
"意见领袖"在全媒体时代引导着公众的舆论走向,左右着公众的情绪。基于互联网媒体传播的开放性、交互性、变异性及与传统媒体的融合性4个特征,阐释了全媒体成为"意见领袖"发挥作用的重要阵地。从舆论热点的构成条件的角度出发,探析中日关系成为全媒体关注焦点的原因,重点剖析了"意见领袖"在中日关系中扮演的推手角色。以中日关系为切入点,在报道此类敏感事件中,"意见领袖"应具备"无欲无求"的责任意识,成为大众心理的引领者而非迎合者。 相似文献
17.
《Research Policy》2022,51(1):104393
In this paper we draw a parallel between the insights developed within the framework of the current COVID-19 health crisis and the views and insights developed with respect to the long term environmental crisis, the implications for science, technology and innovation (STI) policy, Christopher Freeman analyzed already in the early 90′s. With at the time of writing, the COVID-19 pandemic entering in many countries a third wave with a very differentiated implementation path of vaccination across rich and poor countries, drawing such a parallel remains of course a relatively speculative exercise. Nevertheless, based on the available evidence of the first wave of the pandemic, we feel confident that some lessons from the current health crisis and its parallels with the long-term environmental crisis can be drawn. The COVID-19 pandemic has also been described as a “syndemic”: a term popular in medical anthropology which marries the concept of ‘synergy’ with ‘epidemic’ and provides conceptually an interesting background for these posthumous Freeman reflections on crises. The COVID-19 crisis affects citizens in very different and disproportionate ways. It results not only in rising structural inequalities among social groups and classes, but also among generations. In the paper, we focus on the growing inequality within two particular groups: youngsters and the impact of COVID-19 on learning and the organization of education; and as mirror picture, the elderly many of whom witnessed despite strict confinement in long-term care facilities, high mortality following the COVID-19 outbreak. From a Freeman perspective, these inequality consequences of the current COVID-19 health crisis call for new social STI policies: for a new “corona version” of inclusion versus exclusion. 相似文献
18.
在国际科技竞争日益激化、我国科技实力迅速腾飞的当下,国家科学形象日益成为国家形象立体化过程中不可忽视的重要组成部分。通过对国际社交媒体推特平台上有关中国科学相关议题讨论的分析发现,西方公众目前对于中国科学类相关议题的关注度并不高,讨论由少量的主要科学事件主导,明显受到了西方主流新闻媒体与政治话语力量的引导与掌控,且认知偏向于负面。这种负面形象的“他塑”建构在一定程度上被卷入政治话语与国际关系话语体系中,表征为对中国负面科技新闻的报道及阴谋论的关注。而正面积极的科学形象则更多表征为“去政治化”语境下,对中国突破性科学成果与获得国际科学奖项科学家的赞赏,以及对于中国科幻的格外关注。对此,提升中国国际科学形象需要在重视社交媒体平台这一舆论场域的基础上,结合研究结果,制定具有针对性的对外科技传播策略。 相似文献
19.
【目的/意义】微博是公共图书馆进行社会推广、业界交流、用户交互的重要渠道,从社会网络视角分析公共图书馆微博意见领袖的社会网络结构特点及影响力,可为公共图书馆优化微博营销策略、提高自身影响力提供参考。【方法/过程】选取50位公共图书馆微博意见领袖,首先运用社会网络分析方法揭示其社会网络结构特点;其次利用关注量、发文量、粉丝量、转评赞数量分析其活跃情况及影响力。【结果/结论】公共图书馆微博意见领袖地区分布不均衡,联系较紧密,但集中程度较弱;小团体在活跃度、影响力等方面呈现相似性;多数图书馆处于低活跃度、低影响力区间;粉丝量和转评赞数量随着活跃度的提升表现出“低值时平稳波动,高值时迅速增长”的现象。【创新/局限】通过社会网络分析方法在一定程度上掌握了我国公共图书馆微博意见领袖社会结构及影响力。仅从关注量、发文量等客观数据角度分析公共图书馆微博影响力,未来应结合文本分析等方法提高影响力分析的深度。 相似文献
20.
【目的/意义】目前舆情情感演化研究大多是基于主题的方法来进行情感演化分析且重点均集中在从文本
本身提取的信息上,对在社交媒体中影响情感分析的用户特征缺乏考虑。【方法/过程】本文充分考虑网络用户信息
特征,构建融合用户特征的舆情情感演化方法,提出一种基于用户注意力机制的情感分析模型（U-BiLSTM）,并以
新冠肺炎疫情事件为例分析舆情情感演化过程。【结果/结论】研究结果表明U-BiLSTM情感分析模型具有一定的
优越性,F1值和准确率能达到97.08%和95.19%。【创新/局限】研究提出的融合用户注意力机制的情感分析模型能够
使舆情情感演化分析具有一定的可解释性,有效揭示面向突发公共卫生事件下网民的情感演化趋势,但由于时间
和设备条件的限制,仅采用单一数据源未考虑数据的多源性,研究的数据集不够充分且研究角度仅考虑时间维度
忽略了空间维度。 相似文献