张文专, 石磊. 数据矩阵条件指数的影响评价[J]. 云南大学学报(自然科学版), 2004, 26(4): 292-296,300.
引用本文: 张文专, 石磊. 数据矩阵条件指数的影响评价[J]. 云南大学学报(自然科学版), 2004, 26(4): 292-296,300.
ZHANG Wen-zhuan, SHI Lei. Assessment of influence in condition indexes of data matrix[J]. Journal of Yunnan University: Natural Sciences Edition, 2004, 26(4): 292-296,300.
Citation: ZHANG Wen-zhuan, SHI Lei. Assessment of influence in condition indexes of data matrix[J]. Journal of Yunnan University: Natural Sciences Edition, 2004, 26(4): 292-296,300.

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.

     

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