The Dynamics of Emotions in Online Interaction

David Garcia, Arvid Kappas, Dennis Küster, and Frank SchweitzerRoyal Society Open Science, 3 160059 (2016)We study the changes in emotional states induced by reading and participating in online discussions, empirically testing a computational model of online emotional interaction. Using principles of dynamical systems, we quantify changes in valence and arousal through subjective reports, as recorded …

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It’s a Man’s Wikipedia? Assessing Gender Inequality in an Online Encyclopedia

Claudia Wagner, David García, Mohsen Jadidi, Markus Strohmaier Proceedings of the 9th International AAAI Conference on Weblogs and Social Media (2015)Wikipedia is a community-created encyclopedia that contains information about notable people from different countries, epochs and disciplines and aims to document the world’s knowledge from a neutral point of view. However, the narrow diversity of …

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Ideological and Temporal Components of Network Polarization in Online Political Participatory Media

David García, Adiya Abisheva, Simon Schweighofer, Uwe Serdült, Frank Schweitzer Policy & Internet, 2015,  7(1)Political polarization is traditionally analyzed through the ideological stances of groups and parties, but it also has a behavioral component that manifests in the interactions between individuals. We present an empirical analysis of the digital traces of politicians in politnetz.ch, a …

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Online privacy as a collective phenomenon

Emre Sarigol, David García, Frank SchweitzerProceedings of the 2nd ACM Conference in Online Social Networks (COSN’14) 2014 The problem of online privacy is often reduced to individual decisions to hide or reveal personal information in online social networks (OSNs). However, with the increasing use of OSNs, it becomes more important to understand the role of …

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The digital traces of bubbles: Feedback cycles between socio-economic signals in the Bitcoin economy

David García, Claudio Juan Tessone, Pavlin Mavrodiev, Nicolas Perony.Journal of the Royal Society Interface, 2014, 11 (99)What is the role of social interactions in the creation of price bubbles? Answering this question requires obtaining collective behavioural traces generated by the activity of a large number of actors. Digital currencies offer a unique possibility to measure …

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Political polarization and popularity in online participatory media: An integrated approach

David García, Fernando Mendez, Uwe Serdült, Frank Schweitzer. Proceedings of the first edition workshop on Politics, elections and data, PLEAD at CIKM (2012) We present our approach to online popularity and its applications to political science, aiming at the creation of agent-based models that reproduce patterns of popularity in participatory media. We illustrate our approach …

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Emotional persistence in online chatting communities

Antonios Garas, David García, Marcin Skowron, Frank Schweitzer.Scientific Reports 2, 402 (2012)How do users behave in online chatrooms, where they instantaneously read and write posts? We analyzed about 2.5 million posts covering various topics in Internet relay channels, and found that user activity patterns follow known power-law and stretched exponential distributions, indicating that online chat …

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