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Recently, trust models have contributed much to the success of online multimedia recommendation service. However, most of them only consider the case of binary ratings and ignore the attributes of ratings, which will limit their universal applicability. To address this problem, we propose a multi-attribute rating based trust model to improve the Zhang’s(More)
By leveraging online social networks as an underlying infrastructure, Social Participatory Network (SPN) has been becoming a new paradigm of participatory sensing systems. However, a significant barrier to the widespread use of SPN applications is their vulnerability to various forms of malicious attacks. Such threats inhibit human participation and thus(More)
Identity authentication (IA) is vital in ubiquitous computing systems, one of which is web service system, however most current IA schemes and technologies are facing various kinds of attacks and large-scale certification problem. To address this problem, this paper proposes the HyCPK, an improved CPK algorithm based on a single-double hybrid matrix. In(More)
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