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Research of data architecture in digital ocean
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作者 张峰 李四海 石绥祥 《Marine Science Bulletin》 CAS 2010年第2期85-96,共12页
The characters of marine data, such as multi-source, polymorphism, diversity and large amount, determine their differences from other data. How to store and manage marine data rationally and effectively to provide pow... The characters of marine data, such as multi-source, polymorphism, diversity and large amount, determine their differences from other data. How to store and manage marine data rationally and effectively to provide powerful data support for marine management information system and "Digital Ocean" prototype system construction is an urgent problem to solve. Different types of system planning data, such as marine resource, marine environment, marine econotny and marine management, and establishing marine data architecture frame with uniform standard are to realize the effective management of all level marine data, such as national marine data, the provincial (municipal) marine data, and meet the need of fundamental information-platform construction. 展开更多
关键词 digital ocean data architecture data warehouse data mart METAdata
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Performance Improvements in Temperature Reconstructions of 2-D Tunable Diode Laser Absorption Spectroscopy(TDLAS) 被引量:9
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作者 Doo-Won Choi Min-Gyu Jeon +3 位作者 Gyeong-Rae Cho Takahiro Kamimoto Yoshihiro Deguchi Deog-Hee Doh 《Journal of Thermal Science》 SCIE EI CAS CSCD 2016年第1期84-89,共6页
Performance improvement was attained in data reconstructions of 2-dimensional tunable diode laser absorption spectroscopy(TDLAS). Multiplicative Algebraic Reconstruction Technique(MART) algorithm was adopted for data ... Performance improvement was attained in data reconstructions of 2-dimensional tunable diode laser absorption spectroscopy(TDLAS). Multiplicative Algebraic Reconstruction Technique(MART) algorithm was adopted for data reconstruction. The data obtained in an experiment for the measurement of temperature and concentration fields of gas flows were used. The measurement theory is based upon the Beer-Lambert law, and the measurement system consists of a tunable laser, collimators, detectors, and an analyzer. Methane was used as a fuel for combustion with air in the Bunsen-type burner. The data used for the reconstruction are from the optical signals of 8-laser beams passed on a cross-section of the methane flame. The performances of MART algorithm in data reconstruction were validated and compared with those obtained by Algebraic Reconstruction Technique(ART) algorithm. 展开更多
关键词 data Reconstruction TDLAS MART ART
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Association Rule Mining and Its Application
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作者 DUAN Yun feng, LI Jian wei, SONG Jun de, SHU Hua ying (Beijng University of Posts and Telecommunications, Beijing 100876, P.R. China) 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2001年第4期13-17,共5页
Several algorithms in data mining technique have been studied recently, among which association is one of the most important techniques. In this paper, we introduce theory of association rule in data mining, and analy... Several algorithms in data mining technique have been studied recently, among which association is one of the most important techniques. In this paper, we introduce theory of association rule in data mining, and analyze the characteristics of postal EMS service. We create a data warehouse model for EMS services and give the procedure of applying association rule mining based on it. In the end, we give an example of the whole mining procedure. This EMS Data warehouse model and association rule mining technique have been applied in a practical Postal CRM System. 展开更多
关键词 association rule mining data mining data warehouse data mart fact table frequency item set EMS POST
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