Social resilience in online communities: The autopsy of Friendster

David García, Pavlin Mavrodiev, Frank Schweitzer. Proceedings of the 1st ACM Conference in Online Social Networks (COSN’13) 2013 We empirically analyze five online communities: Friendster, Livejournal, Facebook, Orkut, Myspace, to identify causes for the decline of social networks. We define social resilience as the ability of a community to withstand changes. We do not argue …

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Measuring cultural dynamics through the Eurovision song contest

David García, Dorian Tanase. Advances in Complex Systems, 16, 2013 Measuring culture and its dynamics through surveys has important limitations, but the emerging field of computational social science allows us to overcome them by analyzing large-scale datasets. In this article, we study cultural dynamics through the votes in the Eurovision song contest, which are decided …

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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 …

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