THE MEASURE OF MEAN COOK DISTANCE UNDER THE CONTAMINATED ERROR MODEL

来源期刊：中南大学学报(英文版)1999年第2期

论文作者：Wang Zhizhong Zhu Jianjun

文章页码：115 - 119

Key words：robust estimation; Cook distance; maximum likelihood estimation

Abstract: Redefines the mean Cook distance under the contaminated error model. With the help of the mean Cook distance, the paper discusses the relationship between local influence of small perturbations and high leverage case. A new robust method for the adjustment of geodetic networks is proposed. The suggested method, a generalization of the robust method with the minimum mean Cook distance, is more efficient than the others. The basic feature of the method is that the equivalent weight functions of the robust estimates are determined according to the principle of statistics.