Community structure is an interesting feature found in many social networks which signifies that there is intense interaction between some individuals. These communities have a tendency to overlap with each other as there are nodes that can belong to multiple communities simultaneously. Detection of such overlapping communities is a challenging task; it still remains a topic of interest for the...

Influence Maximization is one of the major tasks in the field of viral marketing and community detection. Based on the observation that social networks in general are multi-parameter graphs and viral marketing or Influence Maximization is based on few parameters, we propose to convert the general social networks into “interest graphs”. We have proposed an improvised model for identifying influe...

Nowadays, the growth of virtual environments such as virtual organizations, social networks, and ubiquitous computing, has led to the adoption of trust concept. One of the methods of making trust in such environments is to use a long-term relationship with a trusted partner. The main problem of this kind of trust, which is based on personal experiences, is its limited domain. Moreover, both par...

The concept of social capital is almost becoming a dominant paradigm in the understanding of the social world, gaining greater recognition among researchers and other development thinkers alike. In the UK, this concept, together with its synonyms like social networks, has equally found its expression in the urban environment, especially in the quest for a better understanding of urban regenerat...

Discovering communities in online social networks (OSNs) has attracted much attention in recent years. Most of existing research in this area focuses on the “friend” relationship among members in OSNs, but ignores the fact that a community is subject-centric: people interested in a subject form a community by interacting with each other. In this paper we introduce the concept of subject-driven ...

in recent years, virtual communities have been significantly popular and almost all of them are targeted for business profitability. in our study, the profitability of these communities for businesses has been analyzed from a commercial perspective. the study considers virtual community as a business model which can have a great impact on consumer purchase decision process. with respect to refe...

In this study, we present a new network model to address the question of how social networks such as groups in social websites, networks of social events, online video game groups evolve in time. A common feature of all these networks is that first, new users attach to an existing group (clique), and second, the decision of new network users is greatly influenced by already-joined users. In our...

eParticipation requires some form of authentication. Most of Web 2.0 services are based on virtual identities. As social networks and reputation-based systems for products and services are increasingly complementing people's real world life with new web-based relations and experiences, the referred virtual identities are evolving towards more genuine and less ambiguous references to social iden...