数据矩阵条件指数的影响评价
Assessment of influence in condition indexes of data matrix
-
摘要: 考察了删除单个数据点对条件指数的影响,导出了度量数据点对条件指数影响大小的1种诊断统计量——-样本影响函数的近似计算公式,一个实例被用来说明该方法的可行性.Abstract: The influence of data points on the condition indexes of data matrix is studied via deleting cases one at a time.A approximate formula of sample influence function has obtained.An example is used to illustrate the method.