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In this paper, we motivate the need for new models for Secure Information Sharing (SIS) in the specific domain of community cyber security. We believe that similar models will be applicable in numerous other domains. The term community in this context refers to a county or larger city size unit with a clearly demarcated geographical boundary aligned more or less with a governance boundary. Our choice...
Television and video consumption are growing rapidly worldwide, driving usage of second and third screens for related interactions and information. Since television has a proven impact on consumer purchase behaviors, there is commercial interest in technologies that model viewers' intent, interests and engagement. However, the ecosystem currently faces two challenges - audience fragmentation and a...
Social information systems - popularized by Facebook, Wikipedia, Twitter, and other social websites - are emerging as a powerful new paradigm for distributed social-powered information management. While there has been growing interest in these systems by businesses, government agencies, and universities, there remain important open challenges that must be addressed if the potential of these social...
Collaboration takes place in both closed and open environments. While closed collaboration focuses on information or resource sharing amongst selected participants, open collaboration assumes and emphasizes that anyone can participate. In open collaboration, although participation is open to anyone who wishes to contribute or observe, it does not follow that everyone participates on an equal footing...
In this (invited) paper, we present a work in progress social library and reference management system called SoJa (Social Jabref), which is realized on top of a decentralized (peer-to-peer) social information system. The contribution of the work is multi-fold. It provides a platform to collaborate and socialize to carry out a specific task (managing and sharing bibliographic meta-information). From...
This paper presents MAPS - a personalized Multi-Attribute Probabilistic Selection framework - to estimate the probability of an item being a user's best choice and rank the items accordingly. The MAPS framework makes three original contributions in this paper. First, we capture the inter-attribute tradeoff by a visual angle model which maps multi-attribute items into points (stars) in a multidimensional...
Social navigation and social tagging technologies enable user communities to assemble the collective wisdom, and use it to help community members in finding the right information. However, it takes a significantly-sized community to make a social system truly useful. The question addressed in this paper is whether collaborative information finding is feasible in the context of smaller communities...
With the wide use of online social networks (OSNs), the problem of data privacy has attracted much attention. Several approaches have been proposed to address this issue. One of privacy management approaches for OSN leverages a key management technique to enable a user to simply post encrypted contents so that only users who can satisfy the associate security policy can derive the key to access the...
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