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《Journal of Nanjing University of Aeronautics & Astronautics》 2015-01
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Convex Grey Correlation Model for Identification of Driving Factors of Complex Equipment Cost

Fang Zhigeng;Fang Shili;Wu Lifeng;Yu Liang;College of Economics and Management,Nanjing University of Aeronautics & Astronautics;China Academy of Launch Vehicle Technology;  
In view of the problems like fewer samples and various influencing factors in the prediction of complex equipment costs,the defects in the previous grey relational degree are analyzed and a new grey correlation model of influence factors and cost is established by using improved convex grey correlation.The size of the convex grey correlation degree and the proximity are used to screen the cost driving factor,and a multiple-regression model is established based on the chosen driving factors.Compared with the existing methods,the proposed method has higher prediction accuracy,which means the improved convex grey correlation can diagnose key factors of complex equipment cost.
【Fund】: 国家社会科学基金(12AZD102)重点资助项目;; 国家自然科学基金(71401051 91324003 71372080)资助项目;; “大型飞机”国家科技重大专项(2009ZX11002)资助项目;; 中央高校基本科研业务费专项基金(NP2014105 NP2015208)资助项目;; 江苏省科技思想库(BR2013075)资助项目;; 江苏省高等学校哲学社会科学重点研究基地(2014JDXM015)资助项目;; 国家级教学团队基金(10td128)资助项目
【CateGory Index】: V268.7
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