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Query tools that depend on the ability of programmers, impose a cognitive load that could reduce the user's productivity. Within MDD, the proposal of our work is the creation of a visual query mechanism derived from a historical multidimensional data structure. This mechanism facilitates (and partially automates) the formulation of temporal and decision making queries.
With the growth of e-commerce, the development of recommendation systems is helpful for users to select desirable products from all kinds of them. The existing e-commerce recommendation approaches are based on a user's preference on music. However, sometimes, it might better meet users' requirement to recommend products according to emotions. In this paper, we propose a novel framework model for emotion...
In this paper, based on the study of the emergency rescue system and emergency rescue command information systems in Qinghai-Tibet railway, with qualitative and quantitative analysis, theory and practice analysis, from local to the overall comprehensive analysis methods, using the questionnaire survey and local investigation mode, the comprehensive evaluation of emergency plans in railway is studied...
Conceptual models are designed to express user requirements of information systems in a formal and self-explanatory manner from a business user's point of view. Furthermore, they should contain enough information for IT staff to use them as a basis for technical deployment. Within the domain of OLAP information systems, multidimensional data models are used to translate the specific user requirements...
The development of an open architecture for multimedia data integration and visualization in template based distributed applications is a challenge for the scientific researches. Because of characteristics of multimedia data, their management and querying techniques are unlike than those of traditional data. We can increase the potential use of multimedia data across various applications by storing...
The paper addresses the problem of creating a comprehensive fault injection environment, which integrates and improves various simulation and supplementary functions. This is illustrated with experimental results.
In a virtual sculpture project, we would like to sculpt in real-time very large 3D objects sampled in volume elements (voxels). The drawback of this kind of representation is the important number of voxels required to represent very large and detailed objects. Consequently, that entails important memory cost and computation time issues. In order to allow real-time performance, we propose in this paper...
It's necessary to discuss the topology model of digital images for integrating remote sensing and geographic information system in higher levels. Based on cellular complex theories, a hierarchical image representation is presented that maintains both raster and vector representations of an object inside a same data structure and to translate between spatial concepts in image understanding and mining...
The definition of an oracle function for model transformation is challenging because of the very complex nature of models resulting from a transformation. Validating the correctness of an output model requires checking a large number of properties on the structure and semantics of this model. The oracle function can thus be very complex if it checks every property. In this paper, we identify and discuss...
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