Jianwei Wang

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In this paper, we present a new image thresholding technique which uses the relative entropy (also known as the Kullback-Leiber discrimination distance function) as a criterion of thresholding an image. As a result, a gray level minimizing the relative entropy will be the desired threshold. The proposed relative entropy approach is different from two known(More)
— Orthogonal frequency division multiple access (OFDMA) relay networks have been drawing much more attention in recent years. Cross layer optimization has been shown to be an efficient tool for resource allocation in OFDMA relay networks. However, the fairness issues for OFDMA relay networks have not been examined clearly in existing literature. In this(More)
—Probabilistic XML tree is a typical probabilistic XML data model for representing uncertainty in the form of probability which can be described the nested probabilistic XML element unit. The path set in probabilistic XML unit tree can be analyzed through parsing it and drawing out the corresponding probabilistic XML unit schema tree. The node probability(More)