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NoSQL database (NoSQL DB) covers the shortage of traditional database and has been widely used in recent years. Currently, researches on NoSQL DB mainly focus on performance issues, few of them are about energy consumption (EC) evaluation and optimization. Waiting Energy Consumption (WEC) is another critical reason causing energy waste besides computer idleness. Study the WEC regularities of NoSQL...
Making recognition more reliable under uncontrolled lighting conditions is one of great challenges for practical face recognition systems. in this paper, inspired by the local binary pattern, we present a simple but effective illumination invariant image descriptor in the logarithm domain. in the proposed approach, the logarithm transform is used firstly. then the subtraction of each pixel with the...
In a traditional data warehouse, "subject oriented" means that all the measurements relating to the same real-world event or object are linked together. The measurements are classified and navigated by "subject". But in a multi-use data warehouse, users want to classify and navigate the measurements by mutable cross-classifications flexibly. It is hard to find a universal "subject"...
The paper proposes a data management platform with an open architecture for converting huge amount of various and cluttered data into Lean Data, which provides customer-expected service and can be then encapsulated as service packages to be used by different application developers. Ontology is used to provide a unified way for data flow description and semantic data storage to achieve a unified understanding...
There are many new challenges in building Scientific Data Management System (SDMS), and the most initial and important one of them is designing a reasonably and effectively data architecture. The data architecture should focus on massive metadata, complex data flow, multi-classification data, various data productions and uniform query. Based on the applied projects, we present the classificatory criterions,...
Database partitioning technique which adopts "divide and conquer" method can efficiently simplify the complexity of managing massive data and improve the performance of the system, especially the range partitioning. The traditional range partitioning approach brings heavy burden to the system without an increased partitioning algorithm, so it does not adapt to the partitioning in the realtime...
Data exchange provides a powerful support for data integration, and realizes the sharing of enterprises information. In this paper, data binding is introduced to the model of data exchange, and this makes the progress of data exchange more easily. XML is the data media in the model and operated simply. On the other hand, some technologies just as Castor, XML, XSL are involved, and they play important...
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