Toward automatic censorship detection in microblogs

Social media is an area where users often experience censorship through a variety of means such as the restriction of search terms or active and retroactive deletion of messages. In this paper we examine the feasibility of automatically detecting censorship of microblogs. We use a network growing model to simulate discussion over a microblog follow network and compare two censorship strategies to simulate varying levels of message deletion. Using topological features extracted from the resulting graphs, a classifier is trained to detect whether or not a given communication graph has been censored. The results show that censorship detection is feasible under empirically measured levels of message deletion. The proposed framework can enable automated censorship measurement and tracking, which, when combined with aggregated citizen reports of censorship, can allow users to make informed decisions about online communication habits.Comment: 13 pages. Updated with example cascades figure and typo fixes. To appear at the International Workshop on Data Mining in Social Networks (PAKDD-SocNet) 201

Measuring internet activity: a (selective) review of methods and metrics

Two Decades after the birth of the World Wide Web, more than two billion people around the world are Internet users. The digital landscape is littered with hints that the affordances of digital communications are being leveraged to transform life in profound and important ways. The reach and influence of digitally mediated activity grow by the day and touch upon all aspects of life, from health, education, and commerce to religion and governance. This trend demands that we seek answers to the biggest questions about how digitally mediated communication changes society and the role of different policies in helping or hindering the beneficial aspects of these changes. Yet despite the profusion of data the digital age has brought upon us—we now have access to a flood of information about the movements, relationships, purchasing decisions, interests, and intimate thoughts of people around the world—the distance between the great questions of the digital age and our understanding of the impact of digital communications on society remains large. A number of ongoing policy questions have emerged that beg for better empirical data and analyses upon which to base wider and more insightful perspectives on the mechanics of social, economic, and political life online. This paper seeks to describe the conceptual and practical impediments to measuring and understanding digital activity and highlights a sample of the many efforts to fill the gap between our incomplete understanding of digital life and the formidable policy questions related to developing a vibrant and healthy Internet that serves the public interest and contributes to human wellbeing. Our primary focus is on efforts to measure Internet activity, as we believe obtaining robust, accurate data is a necessary and valuable first step that will lead us closer to answering the vitally important questions of the digital realm. Even this step is challenging: the Internet is difficult to measure and monitor, and there is no simple aggregate measure of Internet activity—no GDP, no HDI. In the following section we present a framework for assessing efforts to document digital activity. The next three sections offer a summary and description of many of the ongoing projects that document digital activity, with two final sections devoted to discussion and conclusions

Hong Kong protests: A quantitative and bottom-up account of resistance against Chinese social media (sina weibo) censorship

Chinese online censorship, though has been deeply explored by many scholars from a top-down perspective and has mostly concentrated on the macro level, it appears that there are few, if any, existing studies that features a bottom-up perspective and explores the micro-level aspects of online media censorship. To fill this research gap, this article uses the Occupy movement in Hong Kong as a research case to analyze social media users’ resistance under conditions of heavy censorship from a bottom-up perspective. That is, the research questions seek to uncover what novel ways Weibo users use to try and circumvent Weibo censorship. It is confirmed that the microbloggers tend to use embedded pictures and user ID names, instead of using text messages to camouflage the sensitive information to share with other users; that Weibo users tend to create new accounts once their original ones have been closed or monitored

Social Media as a Sensor of Air Quality and Public Response in China

Abstract Background: Recent studies have demonstrated the utility of social media data sources for a wide range of public health goals, including disease surveillance, mental health trends, and health perceptions and sentiment. Most such research has focused on English--language social media for the task of disease surveillance. Objective: We investigate the utility of Chinese social media for monitoring air quality trends and related public perceptions and response. The goal is to determine if this data is suitable for learning actionable information about pollution levels and public response. Methods: We mine a collection of 93 million messages from Sina Weibo, China's largest microblogging service. We experiment with different filters to identify messages relevant to air quality, based on keyword matching and topic modeling. We evaluate the reliability of the data filters by comparing message volume per city to air particle pollution rates obtained from the Chinese government for 74 cities. Additionally, we perform a qualitative study of the content of pollution--related messages by coding a sample of 170 messages for relevance to air quality, and whether the message includes details such as a reactive behavior or a health concern. Results: The volume of pollution--related messages is highly correlated with particular pollution levels, with Pearson correlation values up to .718 (n=74, p < .001). Our qualitative results found that 67.1% of messages were relevant to air quality and of those, 79% were a first--hand report. Of first--hand reports, 28.4% indicated a reactive behavior and 18.9% expressed a health concern. Additionally, 3 messages of 170 requested that action be taken to improve quality. Conclusions: We have found quantitatively that message volume in Sina Weibo is indicative of true particle pollution levels, and we have found qualitatively that messages contain rich details including perceptions, behaviors, and self--reported health effects. Social media data can augment existing air pollution surveillance data, especially perception and health--related data that traditionally requires expensive surveys or interviews

(Un)filial daughters and digital feminisms in China: The stories of awakening, resisting, and finding comrades

This thesis sets out to understand Chinese feminist struggles in a so-called digital era by looking at the experiences and practices of an emerging generation of digital feminists that came into light in Chinese feminist movements. Conceptually and methodologically, this research took inspirations from an interdisciplinary body of literature including feminist theory, sociology, media and cultural studies, girlhood studies and gender studies. Inspired by online ethnography and feminist participatory methodologies, it combined an online tracking of feminist events on Weibo with semi-structured interviews and social media diary study with 21 Chinese girls and young women. This thesis explores the embedded and embodied experiences of these participants as they discover and learn about feminism, resist and challenge gender and sexual inequalities, and try to build connections with like-minded people within and beyond the digital sphere. By charting feminist responses and resistance to familial discourses and norms around girlhood and young femininity, I show the emergence of feminist subjectivities of (un)filial daughters that arises from but also comes to reconfigure gender and sexuality within a neoliberal and postsocialist context of patriarchal familism in China. I build upon the concepts of networked counterpublics and networked affects to explore how these (un)filial daughters are networked to carve out spaces for feminist discussion in social media. Employing an affective-discursive analysis, I also tune into how networked feminist resistance and alliances are formed not merely on the basis of how women and feminists talk about these issues but also how they feel

Sina Weibo and its political implications: a case study of the Zhou Yongkang incident

After the Chinese government blocked Facebook in 2008 and Twitter in 2009 in mainland China, perspicacious Chinese Internet service providers have invented alternative social media platforms. Sina Weibo is one of them. Scholars studying the Internet and social media in Western countries have suggested that social media have the potential to construct a unique online public sphere and contribute to a much deeper social change. However, social media and its social and political implications in such a populous developing country with 710 million Internet users have not been thoroughly addressed due to the linguistic estrangement and the firm historical association of the new communication technology with democratic discourse. Furthermore, among the literature studying Chinese Internet, there is a lack of empirical research. The number of studies that look directly into the Chinese social media content is still relatively small. Therefore, this study is an effort to fill this gap through an empirical case study to map out the distinct dynamics in China’s online public sphere facilitated by Sina Weibo. This thesis strives to examine Weibo’s role in facilitating public discussion and constructing an online public sphere in China. To this end, it analyses Sina Weibo users’ discussion about the Zhou Yongkang incident. The theoretical framework applied in this study originates from Habermas’s conception of the public sphere and Warner’s notion of publics. Since these theories formed in Anglophone context, this study focuses on extrapolating the theories into Chinese context. This study uses mixed research methods. It uses both quantitative content analysis and qualitative critical discourse analysis. A wide range of political, social and historical perspectives are also employed to explore the diverse discourse and dynamic interaction on Weibo. Drawing from the public discussion in Zhou’s case, the thesis paints a relatively promising picture of the social media as a platform for personal expression in public discussion on political issues, comparatively jumping out of the discourse agenda set by the government and state media. The interaction among users indicates that rational-critical debate has become a part of China’s online public sphere

Journalistic culture in contemporary China: media control, journalistic corruption, and the impact of social media

Over the last three decades, Chinese society has experienced dramatic social change. China is now turning into a global superpower, both economically and militarily but not necessarily politically. Western media often embarrass Chinese political leaders for their suppression on free speech and deviation from political democracy. This is the wider social context in which this thesis locates its enquiries. The Chinese media are deeply involved in this social transition. This thesis intends to provide an up-to-date investigation into journalistic culture in contemporary China, where journalism undergoes political suppression, commercial imperatives, and technological upgrades. This thesis examines the key tenets of practising journalism. It focuses on three areas: (1) the norms of practising journalism under political suppression, (2) the main forms of and roots of journalistic corruption that have brought forth by media commercialisation, and (3) the changes and continuities in journalistic practices associated with social media. This research is mainly based on six individual interviews and six focus group interviews, carried out between January 2012 and February 2012 in Beijing and Shanghai. The research is also supported by materials gained through personal communication in these cities. The research concludes that self-censorship and journalistic corruption are two prominent features of contemporary Chinese journalism. Social media have brought both changes and continuities to journalistic practices and media control methods. In analysing the factors shaping contemporary journalism, journalists tend to highlight the impact of traditional Chinese culture. This research, however, suggests that culture does not always play a determinative role. Political, economic and cultural factors, alongside other elements, all contribute to shaping journalism. We need a more dynamic and comprehensive perspective in examining journalism, which should be spatial-temporally constructed

User behavior in microblogs with a cultural emphasis

The main objective of this thesis is to carry out a multidisciplinary study of the behavior of microblog users. To that end we first explore several user behavior patterns employing data mining techniques. Then we use social science theories of culture and socio-economic indicators to better understand differences and similarities of user behavior across countries. We found several insights on user behavior such as (i) social link recommendations made by current friends have a large effect on link formation and the accepted recommendations have more longevity than other links; (ii) as users mature, they evolve to adopt microblogs as a news media rather than a social network; (iii) the collective behavior of users from some countries standout, based on certain special characteristics such as conversations, reciprocity, etc.; (iv) national culture determines the temporal patterns with which users post, or the extent to which they mention, follow, recommend and befriend others; and (v) socio-economic and cultural features improve the prediction of communication strength among users from different countries.El objetivo principal de esta tesis es realizar un estudio multidisciplinario sobre la conducta de los usuarios en microblogs. Para ello primero exploramos varios patrones de comportamiento de usuario usando técnicas de minería de datos. Luego usamos algunas teorías de las ciencias sociales en cultura e indicadores socioeconómicos para comprender mejor las diferencias y similitudes del comportamiento de los usuarios en diferentes países. Encontramos varios resultados interesantes sobre el comportamiento del usuario, tales como, (i) las recomendaciones de enlaces sociales hechas por amigos tienen un gran efecto sobre la formación de enlaces sociales y las recomendaciones aceptadas tienen más longevidad que otros enlaces; (ii) a medida que los usuarios maduran, estos evolucionan a usar los microblogs como un medio de comunicación en lugar de una red social; (iii) el comportamiento colectivo de los usuarios de algunos países se destaca en base a ciertas características peculiares, tales como conversaciones, reciprocidad, etc.; (iv) la cultura nacional determina los patrones temporales con los que los usuarios publican mensajes, o el grado en que se mencionan, recomiendan y siguen los unos a los otros; y (v) las características socioeconómicas y culturales ayudan a mejorar la predicción de la intensidad de la comunicación entre los usuarios de diferentes países

Assessing the growing impact and potential of social networking mediums in crisis communication in South Africa : A Case Study of the South African Protection of State Information Bill

Includes bibliography.With new political developments breeding opportunities for crises, proliferation of new media types increasing exposure to crises, there is a growing awareness of the potential, influence, impact and capabilities of social media. Focusing on South Africa's Secrecy Bill, a crisis with implications on access to information and media freedom, this study provides a discussion of the dynamics of crisis communication online. By undertaking an analysis of the uses of social media during deliberations of the Secrecy Bill and its implications, the study sought to explore how young South Africans have embraced social media as a communication tool. An examination of the literature reveals that younger generations are frequent bloggers and users of Twitter, a popular social media site. Focusing on these two platforms, through a qualitative content analysis, findings show that their contribution to deliberations was mainly to make sense of the crisis and distribute relevant materials relating to the debate