Social Network Analysis (SNA) tries to understand and exploit the key features of social networks in order to manage their life cycle and predict their evolution. Increasingly popular web 2.0 sites are forming huge social network. Classical methods from social network analysis (SNA) have been applied to such online networks. In this paper, we propose leveraging semantic web technologies to merg...

How can individuals and communities protect their privacy against social network analysis tools? How do criminals or terrorists organizations evade detection by such tools? Under which conditions can these tools be made strategy proof? These fundamental questions have attracted little attention in the literature to date, as most social network analysis tools are built around the assumption that...

This paper describes a Social Network Analysis toolkit to monitor an Enterprise Social Network and help analyzing informal leadership as a function of social ties and topic discussions. The toolkit has been developed in the context of a regional project, Fiordaliso, funded by Regione Lazio (a region of central Italy) and leaded by Reply, an international network of specialized companies in the ...

Research on happiness has been conducted for many decades with various interesting results reported by different groups of researchers. While there is a plethora of research efforts on happiness in general, there is little work being done to study the effects of online social networks on happiness. This is mainly due to the relative (in)maturity of online social networking as it has only been a...

As Social Network Sites (SNS) permeate our daily routines, the question whether participation results in value for SNS users becomes particularly acute. This study adopts a 'participation-source-outcome' perspective to explore how distinct uses of SNS generate various types of social capital benefits. Building on existing research, extensive qualitative findings and an empirical study with 253 ...

We investigated how positive affectivity influences people's perception of the pat terns of social relationships around them. Positive affectivity was measured as trait positive affect. The outcome variable was accuracy in the perception of informal patterns of social interaction in a group (i.e., the group's network structure). Data on the perception of the relationships of friendship and work...

Opinion leadersplay important roles in interpersonalcommunication.Marketerscancontact the opinionleadersandreducecostsandimproveoverallcommunicationefficacybycommunicating effectivelywiththem.Thisstudyinvestigatestheopportunityofconsumersbecomingopinionleaders andalsoinvestigatestheeffectsofperceivedriskandshoppingvalueononlineconsumerpurchase...