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By fully exploring various sensing capabilities and multiple wireless interfaces of mobile devices and integrating them with human power and intelligence, mobile crowdsourcing (MCS) is emerging as an effective paradigm for large-scale multimedia-related applications. However, most MCS schemes use a direct mode, in which crowdworkers passively or actively select tasks and contribute without interacting...
Instant messaging (IM) tools have been widely used in peoples' daily life. We study how to detect the identities of IM users from their chatting text. The abnormal detection model is employed to detect the identities of IM users. We use the topic model to find the relations between function words of chatting text, and extract the topic features to represent chatting text To improve the accuracy, we...
Opcode sequences from decompiled executables have been employed to detect malware. Currently, opcode sequences are extracted using text-based methods, and the limitation of this method is that the extracted opcode sequences cannot represent the true behaviors of an executable. To solve this issue, we present a control flow-based method to extract executable opcode behaviors. The behaviors extracted...
With the increasing development of e-commerce application, e-commerce system security is facing the heavy challenge. To solve the purpose of intensifying the behavior trustworthiness and controllability of e-commerce system, we focus on building the trustworthy model between e-commerce system and user behaviors and strengthening the manageability of e-commerce systems. This paper by setting up the...
Grid computing technique is a mature technique for distributed-data computing and processing. Scientific workflow (SWF) technique is one of the most important parts of grid computing and typically used for job scheduling, distributed services invocation and distributed data processing. However, rare previous literatures studied the security issues of SWF in the design of scientific workflow though...
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