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检索条件"作者=WANG Songgui Wai-Cheung IpDepartment of applied mathematics, beijing Polytechnic University, beijing 100022, china"
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A matrix version of the Wielandt inequality and its application to statistics
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Chinese Science Bulletin 1999年 第2期44卷 118-121页
作者： wang songgui wai-cheung ipdepartment of applied mathematics, beijing polytechnic university, beijing 100022, china Institute of applied mathematics, Chinese Academy of Sciences, beijing 100080, china Department of applied mathematics, Hong Kong polytechnic university, Hong Kong, china Department of applied mathematics Beijing Polytechntc University Beijing China Institute of applied mathematics Chinese Academy of Sciences Beijing China Department of applied mathematics Hong Kong Polytechnic University Hong Kong China
Suppose that A is an n×n positive definite Hemitain matrix. Let X and Y ben×p and n×q matrices（p+q≤n）, such that X*Y=O. The following inequality is provedX*AY（YAY）-Y*AX≤（（λ1-λn）/（λ1+λn）2）X*AX,where ... 详细信息
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A TEST FOR SPHERICITY OF ERRORS IN LINEAR MODELS
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Systems Science and Mathematical Sciences 1997年 第3期10卷 202-207页
作者： wang songgui(Institute of Statistics, beijing polytechnic university, beijing 100022, china)(Institute of applied of mathematics, Academia Sinica, beijing 100080, china)YANG Zhenhai(Institute of Statistics, beijing polytechnic university, beijing 100022,
For a general linear model, spherical distributions are often considered whenerrors do not have normal distribution. Several authors[1-3] studied the least squaresand James-Stein estimations for a linear model whose e... 详细信息
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