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Crowdsourced ranking algorithms ask the crowd to compare the objects and infer the full ranking based on the crowdsourced pairwise comparison results. In this paper, we consider the setting in which the task requester is equipped with a limited budget that can afford only a small number of pairwise comparisons. To make the problem more complicated, the crowd may return noisy comparison answers. We...
Physical layer security is a critical issue in cognitive radio networks (CRNs). This paper thus focuses on the joint primary user (PU) secrecy rate maximization and secondary user (SU) transmission capacity optimization problem in overlay CRNs. The PU leases its partial transmission spectrum to the SU for cooperative relaying opportunity by the SU. Different from previous works, the SU transmitter...
The Software Defined Network (SDN) is a new networking paradigm, which separates the control plane and data plane. In this paper, we study two efficient large flow scheduling problems using SDN. We firstly present problem definitions, then we propose two algorithms based on Minimize-Cost Maximize-Flow (MCMF) model. One is for static model and the other for dynamic model. We show how to determine the...
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