Structure and evolution of online social relationships: Heterogeneity in warm discussions

Abstract

With the advancement in the information age, people are using electronic media more frequently for communications, and social relationships are also increasingly resorting to online channels. While extensive studies on traditional social networks have been carried out, little has been done on online social network. Here we analyze the structure and evolution of online social relationships by examining the temporal records of a bulletin board system (BBS) in a university. The BBS dataset comprises of 1,908 boards, in which a total of 7,446 students participate. An edge is assigned to each dialogue between two students, and it is defined as the appearance of the name of a student in the from- and to-field in each message. This yields a weighted network between the communicating students with an unambiguous group association of individuals. In contrast to a typical community network, where intracommunities (intercommunities) are strongly (weakly) tied, the BBS network contains hub members who participate in many boards simultaneously but are strongly tied, that is, they have a large degree and betweenness centrality and provide communication channels between communities. On the other hand, intracommunities are rather homogeneously and weakly connected. Such a structure, which has never been empirically characterized in the past, might provide a new perspective on social opinion formation in this digital era.

7 pages, 7 figures, 2 tables

References in corpus (11)

• Community structure in social and biological networks
• Assortative mixing in networks
• The architecture of complex weighted networks
• Specificity and stability in topology of protein networks
• Who is the best connected scientist? A study of scientific coauthorship networks
• Universal Behavior of Load Distribution in Scale-free Networks
• Scale-free topology of e-mail networks
• Properties of highly clustered networks
• Nonequilibrium transitions in complex networks: a model of social interaction
• Structure and Time-Evolution of an Internet Dating Community
• The role of network topology on extremism propagation with the Relative Agreement opinion dynamics

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• Virtual communities? the middle east revolutions at the Guardian forum: Comment Is Free
• Effects of substrate network topologies on competition dynamics