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In outsourced database system, data owners delegate their database needs and functionalities to a third-party that provides services to the users of the database. Since the third party can be seldom trusted or can be compromised, it is important to provide copyright protection for outsourced database. In this paper a novel scheme of copyright protection for(More)
How to model the process of information diffusion in social networks is a critical research task. Although numerous attempts have been made for this study, few of them can simulate and predict the temporal dynamics of the diffusion process. To address this problem, we propose a novel information diffusion model (GT model), which considers the users in(More)
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