With the powerful sensing capability of mobile smart devices, users can easily obtained the crowd sensing services with smart devices in the Internet of Things. However, credible interaction issues between mobile users are still the hard problems in the past. In this paper, we focus on how to assign the crowdsourcing sensing tasks based on the credible interaction between users.

First, a novel credible crowdsourcing assignment model is proposed based on social relationship cognition and community detection. Second, the service quality factor, link reliability factor, and region heat factor are introduced to scientifically evaluate the user crowdsourcing preferences. And then, a crowdsourcing algorithm based on Analytic Hierarchy Process theory is proposed. Finally, the simulation experiments prove the correctness, effectiveness, and robustness of our method.1

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