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Cyberbullying is the most common online risk for adolescents, and it has been reported that over half of young people do not tell their parents when it occurs. Cyberbullying involves the deliberate use of online digital media to communicate false or embarrassing information about another person. While previous work has extensively analyzed the nature and prevalence of cyberbullying, there has been...
While online social networks provide access to a massive information source, they also enable wide dissemination of false or inaccurate content. Undesirable results caused by misinformation propagation make its timely detection very imperative. An important question is how many monitors are required to detect all misinformation cascades at their early stage. To answer this question, we define a Time...
This paper looks at organization of software development teams and project communities at GitHub. Using social network analysis several open-source projects are analyzed and social networks of users with ties to a project are shown to have some scale-free properties. We further show how to find core development group and a network metric is introduced to measure collaboration among core members, corresponding...
Social influence has attracted tremendous attention from both academic and industrial communities due to the rapid development of online social networks. While most research has been focused on the direct influence between peers, learning cascaded indirect influence has not been previously studied. In this paper, we formulate the concept of cascade indirect influence based on the Independent Cascade...
This paper proposes an approach to cluster social media posts. It aims at taking full advantage of this recent source of newsworthy information and at facilitating the work of users who need to monitor public events in real-time. The emphasis is on developing a stream clustering algorithm able to process incoming tweets. A first implementation of the algorithm, focusing on the tweets' text, was tuned...
In addition to using social media to connect with others worldwide, many people nowadays get their news about different national or international events such as natural disasters, crises, political elections, conflicts etc. via social media. This evolution in the usage of social media has not only led to the generation of massive amounts of data but also various information consumption behaviors....
Modern popular TV series often develop complex storylines spanning several seasons, but are usually watched in quite a discontinuous way. As a result, the viewer generally needs a comprehensive summary of the previous season plot before the new one starts. The generation of such summaries requires first to identify and characterize the dynamics of the series subplots. One way of doing so is to study...
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