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ZIP回归模型的局部影响诊断 被引量：1

Local Influence Diagnostics of the Zero Inflated Poisson Regression Models
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摘要 基于EM算法和完全数据对数似然的条件期望,分别研究了ZIP回归模型在加权扰动、解释变量扰动和响应变量扰动下的局部影响诊断问题,得到了相应的诊断统计量.最后通过一个实例说明诊断统计量的有效性. Based on the EM algorithm and conditional expectation of the complete-data log-likelihood tunction, this paper develops the local influence analysis of the zero inflated poisson regression models under the the caseweights, perturbation of explanatory variables and response, respectively, and the corresponding diagnostics statistics are obtained. Finally, a numerical example is given to illustrate the results.
作者 李爱萍 朱震球 解锋昌
机构地区 南京农业大学数学系
出处 《宁夏大学学报（自然科学版）》 CAS 北大核心 2006年第3期197-200,共4页 Journal of Ningxia University(Natural Science Edition)
基金 国家自然科学基金资助项目(10371016) 南京农业大学青年科技创新基金资助项目(KJ06026)
关键词 ZIP回归 局部影响 曲率 扰动 EM算法 ZIP regression model local influence curvature perturbation EM algorithm
分类号 O212.2 [理学—概率论与数理统计]
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参考文献8

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二级参考文献3

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共引文献2

同被引文献9

  • 1LAMBERT D. Zero-inflated Poisson regression with an application to defects in manufacturing[J]. Technometrics, 1992,34 : 1-14.
  • 2LAM K F, XUE H Q, CHEUNG Y B. Smiparametric analysis of zero-inflated count data [J]. Biometrics, 2006,62:996-1003.
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  • 9冉昊,朱仲义.半参数回归模型的异方差统计分析[J].应用概率统计,2004,20(1):83-90. 被引量：16

引证文献1

宁夏大学学报（自然科学版）
2006年 第3期

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