A note on local influence based on normal curvature

• 成果类型: Article
• 署名作者: Fung, WK; Kwan, CW
• 署名单位: University of Hong Kong
• 刊物名称: JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY
• ISSN/ISSBN: 1369-7412
• DOI: 10.1111/1467-9868.00100
• 发表日期: 1997
• 页码: 839-843
• 关键词: GENERALIZED LINEAR-MODELS; diagnostics

摘要

Object functions other than the likelihood displacement, such as a parameter estimate or a test statistic, can also be used in local influence analysis. The normal curvatures of these object functions have been studied in situations where the slopes were non-zero. In these situations, we show that the normal curvature is not scale invariant and thus ambiguous conclusions will be drawn. Comments on the application of the general normal curvature formula are presented.