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Graph-based ranking models, such as manifold ranking (MR), have been widely used in various image retrieval applications. To further improve such models, a current trend is to fuse the ranking results from multiple feature sets. Most of existing methods mainly concentrate on fusing the homogeneous feature sets derived from a single information channel, like the multiple modalities of image visual...
Cognitive radio technology is proposed to improve spectrum utilization efficiency through exploiting the unused portions of spectrum in an opportunistic manner. In cognitive radio networks (CRNs), primary users (PUs) are allowed to lease out their unused spectrum to share with cognitive users (CUs). In a CRN consisting of multiple PUs and CUs, the spectrum pricing and resource allocation scheme have...
A criticality analysis method based on cloud model is proposed. First normal cloud model of each evaluating target and its weight is built, and then evaluating matrix is calculated through the cloud model, finally evaluating result is presented. Example shows that this method is more practical and provides more information than that of traditional RPN method. This method provides an effective method...
This paper considers the pricing and quantity decisions of a two-echelon system consisting of one manufacturer and two retailers under their different competitive behavior-Cournot, Collusion and Stackelberg. The sensitivity of the retail quantity to the wholesale price of the manufacturer and the sale prices of the retailers is fully considered. A novel retailers' profit model is developed. Then a...
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