A collection of technologies termed social computing is driving a dramatic evolution of the Web, matching the dot-com era in growth, excitement, and investment. All of these share a high degree of community formation, user level content creation, and a variety of other characteristics. We provide an overview of social computing and identify salient characteristics. We argue that social computin...

M ultimedia computing, which ultimately aims to deliver multimedia content to users according to their information needs (intents), can be decomposed into various stages, such as multimedia compression (for storage), multimedia communication (for delivery), and multimedia content analysis (for intelligence). The first two stages are comparatively well studied, while multimedia analysis started ...

While both volunteer computing and social networks have proved successful, the merging of these two models is a new field: Social Volunteer Computing. A Social Volunteer Computing system utilizes the relationships within a social network to determine how computational resources flow towards tasks that need to be completed, and the results of these computations are added back into the social net...

This paper defines the problem of Scalable Secure Computing in a Social network: we call it the S problem. In short, nodes, directly reflecting on associated users, need to compute a function f : V → U of their inputs in a set of constant size, in a scalable and secure way. Scalability means that the message and computational complexity of the distributed computation is at most O(√n · polylog n...

Within communities knowledge is shared regularly. Although today’s communities can rely on sophisticated collaboration technologies, the sharing of knowledge remains impeded by different social mechanisms. Removing impediments that originate from different understandings between knowledge exchanging individuals has been called boundary management by Carlile. Boundary management can be supported...

Social Computing (SC) requires agents to reason seamlessly both on their social relationships and on their goals, beliefs. We claim the need to explicitly represent the social state and social relationships as resources, available to agents. We built a framework, based on JaCaMo, where this vision is realized and SC is implemented through social commitments and commitment protocols. 1 PROPOSAL ...

Social computing has emerged as a broad area of research in HCI and CSCW, encompassing systems that mediate social information across collectivities such as teams, communities, organizations, cohorts, populations, and markets. Such systems are likely to support and make visible social attributes such as identity, reputation, trust, accountability, presence, social roles, expertise, knowledge, a...