I am a PhD student at the Institute for Cross-Disciplinary Physics and Complex Systems in Palma de Mallorca.

Main topic of my research interests is social networks, and so far my work concentrates on them. Although I have Master in Physics the research which we perform with my collaborators is truly interdisciplinary, on the frontier between Computer Science, Sociology and Physics.

I have a feeling that my journey with social networks is just spinning off. I had a pleasure to participate in Truthy project at Indiana University, where we developed its real-time movies feature, that later won the WICI Data Challenge for us. Recently I have finished a half year long internship at Yahoo! Research Barcelona in the Social Media Engagement group.

AG 1, AG 2, AG 3, AG 4, AG 5, SWS, RG1, MMCI   Info

Expert Audience

English

60 Minutes

Saarbrücken

An increasing number of today's social interactions occurs using online social media as communication channels. Some online social networks have become extremely popular in the last decade. They differ among themselves in the character of the service they provide to online users. For instance, Facebook can be seen mainly as a platform for keeping in touch with close friends and relatives, Twitter is used to propagate and receive news, LinkedIn facilitates the maintenance of professional contacts, Flickr gathers amateurs and professionals of photography, etc. Albeit different, all these online platforms share an ingredient that pervades all their applications. There exists an underlying social network that allows their users to keep in touch with each other and helps to engage them in common activities or interactions leading to a better fulfillment of the service's purposes. This is the reason why these platforms share a good number of functionalities, e.g., broadcasted status updates, personal communication channels, easy one-step information sharing, groups created and maintained by the users, organized user-generated content etc. As a result, online social networks are an interesting field to study social behavior that seems to be generic among the different online services. Since at the bottom of these services lays a network of declared relations and the basic interactions in these platforms tend to be pairwise, a natural methodology for studying these systems is provided by network science. In this presentation I describe some of the results of my studies about community structure, interaction dynamics and browsing patterns in online social networks. I present them in an interdisciplinary context of network science, sociology and computer science.

The presentation is divided into three main parts, here are the links to our publications related to each of the sections:

Part I: Interaction patterns in the context of social groups
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0029358


Part II: Social and topical groups
http://dl.acm.org/citation.cfm?id=2433475

Part III: User browsing patterns and photo recommendation
https://docs.google.com/file/d/0B0_e6k3kQKEubEZfZnQwckNjQXM/edit

Brigitta Hansen

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