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In today's cloud computing platforms, more and more users are now working or collaborating in multi-cloud environment, in which collaborators, clouds, computing nodes may belong to different institutions or organizations. Those different organizations might have their own policies. Security is still a big concern in cloud computing. To help cloud vendors and customers to detect and prevent from being...
Trust can help participants in online social communities to make decisions; however, it is a challenge for systems to map trust into computational models because of its subjective properties. Also, many online social communities are sparsely connected. Therefore, it is necessary to introduce mechanisms which can infer indirect trust among participants who are not directly connected. We provide a survey...
Internet of Things (IoT) can connect a large numberof things (or agents) through communication networks for varioustypes of applications. Like in many other applications, it isvery important for all the agents in IoT systems to collaboratewith each other following predefined protocols. In this paper, we proposed a general trust management framework aiming tohelp agents to evaluate their partners'...
Trust plays a very important role in people's real lives. As online social networking becomes more and more popular nowadays, it is urgent to use trust in online communities, like Amazon.com, Epinions.com, Facebook, Twitter and so on. Unfortunately, trust links in online communities are sparse compared with the number of pairs of users. To address this problem, computer scientists are now using trust...
Inspired by the similarities between human trust and physical measurements, we have proposed a trust framework for social networks, including defining new trust metrics and their combinations, which captures both human trust level and its uncertainty, while being intuitive and user friendly. Based on our trust framework, we propose several security mechanisms, including filtering information on social...
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