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As a prevalent type of Web advertising, contextual advertising refers to the placement of the most relevant ads into a Web page, so as to increase the number of ad-clicks. However, some problems of homonymy and polysemy, low intersection of keywords etc., can lead to the selection of irrelevant ads for a page. In this paper, we present a new contextual(More)
In medical information systems, there are a lot of confidential information about patient privacy. It is therefore an important problem how to prevent patient’s personal privacy information from being disclosed. Although traditional security protection strategies (such as identity authentication and authorization access control) can well ensure data(More)
The Capsule Reviews are intended to provide a short succinct review of each paper in the issue in order to bring it to a wider readership. The Capsule Reviews were compiled by Fairouz Kamareddine. The authors argue that the capability to quickly find the correct answer for a specific question is crucial to every organization but that most of the information(More)
The rapid increase of multimedia data makes multimedia query more and more important. To better satisfy users' query requirements, developing a functional multimedia query language is becoming a promising and interesting task. In this paper, we propose a graphical multimedia query language called GMQL, which is developed based on a semi-structured data(More)
Data privacy and security Encryption Two-phase query Characteristic index a b s t r a c t Rapid advances in the networking technologies have prompted the emergence of the ''software as ser-vice'' model for enterprise computing, moreover, which is becoming one of the key industries quickly. ''Database as service'' model provides users power to store, modify(More)
As a prevalent type of Web advertising, contextual advertising refers to the placement of the most relevant commercial ads within the content of a Web page, to provide a better user experience and as a result increase the user’s ad-click rate. However, due to the intrinsic problems of homonymy and polysemy, the low intersection of keywords, and a lack of(More)