检测高杠杆点的图示方法  

The Graphical Method for Inspecting High Leverage point

作　　者：王斌会[1] 郭祖超[2] 胡琳[2] 徐勇勇[2] 

机构地区：[1]广州第一军医大学 [2]西安第四军医大学

出　　处：《数理医药学杂志》1993年第4期15-17,共3页Journal of Mathematical Medicine

摘　　要：通常在回归模型中对高杠杆点的诊断方法是针对模型整体来讲的。由于模型中自变量在自变量空间的位置受样本点的影响,每个点对各个变量的影响又各不相同。本文提出一种用于诊断样本点对自变量作用大小的图示模型——部分杠杆图,它不仅能反映样本点对各个变量的影响,而且可以检查它对整个模型的影响。In the regression model, the general diagnostic method of high leverage points is the light of the whole model. The position of explanatories in the explanatories space are influenced by obdervation, and the influence of each case to each variable is different, In the paper, a new graphical model called partial leverage plot is presented. It can be used not only to reflect the influence of case to variable, but also to detect some ease with influence on the whole model.

关 键 词：高杠杆点 杠杆图 医用数学 

分 类 号：R311[医药卫生—基础医学]