摘要
利用Pena距离对KL估计的影响分析进行讨论,得到了KL估计的Pena统计量的表达式,并对其性质进行讨论分析,从而得到高杠异常点的判别方法。本文对Pena统计量与Cook统计量的性质进行了比较,得出在一定条件下Pena统计量是优于Cook统计量的结论。通过实例对比分析,得到研究结果表明本文提出的理论和方法是科学合理的。
In this paper, the influence analysis of KL estimation is discussed on the Pean distance. The expression of Pena statistics of KL estimation is obtained. The properties of Pena statistics are discussed and analyzed;meanwhile the discrimination of high-leverage outlier is obtained. In this paper, the properties of Pena statistic and Cook statistic are compared, and it is concluded that Pena statistic is better than Cook statistic under certain conditions. Through the example analysis, the research results show that the theory and method proposed in this paper are scientific and reasonable.
出处
《应用数学进展》
2021年第4期923-930,共8页
Advances in Applied Mathematics
