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—This paper presents a generalized version of the linear threshold model for simulating multiple cascades on a network while allowing nodes to switch between them. The proposed model is shown to be a rapidly mixing Markov chain and the corresponding steady state distribution is used to estimate highly likely states of the cascades' spread in the network.(More)
With social interaction playing an increasingly important role in the online world, the capability to extract latent communities based on such interactions is becoming vital for a wide variety of applications. However, existing literature on community extraction has largely focused on methods based on the link structure of a given social network. Such(More)
— Advanced communication technologies enable strangers to work together on the same tasks or projects in virtual environments. Understanding the formation of task-oriented groups is an important first step to study the dynamics of team collaboration. In this paper, we investigated group combat activities in Sony's EverQuest II game to identify the role of(More)
Interpersonal interaction plays an important role in organizational dynamics, and understanding these interaction networks is key for any organization, since they can be tapped to facilitate various organizational processes. The principal roadblock to studying organizational networks, however, has been the difficulty in collecting data about them. The(More)