Heterogeneity shapes groups growth in social online communities

Heterogeneity shapes groups growth in social online communities

Many complex systems are characterized by broad distributions capturing, for example, the size of firms, the population of cities or the degree distribution of complex networks. Typically this feature is explained by means of a preferential growth mechanism. Although heterogeneity is expected to play a role in the evolution it is usually not considered in the modeling probably due to a lack of ...

Social Norms for Online Communities

Abstract—Sustaining cooperation among self-interested agents is critical for the proliferation of emerging online social communities, such as online communities formed through social networking services. Providing incentives for cooperation in social communities is particularly challenging because of their unique features: a large population of anonymous agents interacting infrequently, having ...

Dissertation Proposal: Social Capital in Online Communities

Online communities are connecting hordes of individuals and generating rich social network data. The social capital that resides within these networks is largely unknown. We propose to create a general framework for measuring and leveraging social capital based upon explicit social networks, implicit affinities, and the mobilization of social resources. The resulting quantitative models are use...

Detecting communities in online social networks

A community can be defined as a subset of the users in a social network that is more tightly interconnected than the overall network. Communities are useful, for instance, to guide information dissemination and acquisition, to recommend or introduce people who would likely benefit from direct interaction, and to express access control policies. In this paper, we study algorithms for automatical...

Datenschutz in Online Social Communities aus Nutzerperspektive