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With the advances in geo-positioning technologies and location-based services, it is nowadays quite common for road networks to have textual contents on the vertices. Previous work on identifying an optimal route that covers a sequence of query keywords has been studied in recent years. However, in many practical scenarios, an optimal route might not always be desirable. For example, a personalized...
Nowadays, the performance and security are always hot research topics in different data fusion systems. In this paper, a more efficient and secure heterogeneous data fusion system has been proposed and implemented. Firstly, based on the global data pattern, which is referred to the concept of view in database, the heterogeneous data is transformed into Extensible Markup Language(XML) documents which...
Flash memory has been widely used in the storage system, mainly due to its superiority such as smaller size, lower power consumption, faster read performance and no mechanical delay. Though the traditional multi-dimensional applications with spatial data management, such as GIS, CAD/CAM, data mining, could directly run over flash memory under the support of FTL (Flash Translation Layer), the performance...
In many applications like moving-objects and sensors databases, data values are inherently uncertain. In these systems, an attribute value can be modeled as a range of possible values, associated with a probability density function. Data mining of the uncertain data attracts more and more research interest recently. The definitions of probabilistic core object and probabilistic density-reachability...
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