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《JOURNAL OF CHANGDE TEACHERS UNIVERSITY》 1999-03
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Overcome Singular Variance in Return Model

Yan Yin(Hunan Business College, Changsha,410205)  
The article presents two methods in retum analysis resulting from changing original modal and weighted least squares: (i) singular Varuance brings about effects on estimative results; (ii)How to eleminaten its difference.
【CateGory Index】: O212
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【Co-citations】
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3 LI Wei,ZHU Hong(School of Science,Beijing Jiaotong University,Beijing 100044,China);Application of Uniform Experiment Design in Prescription of Oil Displacement Agent[J];Journal of Beijing Jiaotong University;2008-03
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9 Xue Yi Chen Liping ( Department of Applied Mathematics, Beijing Polytechnic University, 100022 );The Methods for Solving Minimum L1 - norm Estimation Through Mathematical Programming[J];Journal of Beijing Polytechnic University;1997-02
10 Li Tichuan Huang Mn Li Xinyun Zhang Baoquan Zhang Yu( Department of Chemistry and Environmental Engineering,Beijing Polytechnic University, 100022 )Cheng Weihu ( Department of Applied Mathematics, Beijing Polytechnic University, 100022 );Ridge Regression Spectrophotometry to the Determination of Multicomponent Phenols in Waste Water[J];Journal of Beijing Polytechnic University;1997-02
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1 Xu Houhai Liu Baodong Wang Yuanfeng (School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044);A Regression Formula for Creep of Axial Compression Concrete Confined by FRP[A];[C];2007
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1 Xu Hui (Forest Resources Faculty,Southwest Forestry College,Kunming 650224 ,P.R.China);ABiomass Model Compatible with Volume[J];JOURNAL OF BEIJING FORESTRY UNIVERSITY;1999-05
2 FENG Zhong-ke~1;WANG Zhong-feng~(1,2);LUO Xu~1.1 Institute of GIS,RS & GPS,Beijing Forestry University,100083,P.R.China; 2 School of Prospecting and Surveying,Changchun Institute of Technology,130021,P.R.China.;Biological characteristic coefficients of ten tree species in Xiaolong Mountain,west China.[J];Journal of Beijing Forestry University;2005-S2
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1 SONG Yuyang1,2,CHU Guangming1,HU Xiaojing1 ( 1. Department of Forestry,Shihezi University,Shihezi 832003,P. R. China; 2. Key Laboratory of Environment and Education Ministry in West China ,Northwest A&F University,Yangling 712100,P. R. China);Evaluation on age estimation model of Haloxylon ammodendron in the Gurbantongut Desert[J];Journal of Arid Land Resources and Environment;2011-01
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