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ZIP回归模型的数据删除度量和广义杠杆(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2007年06期
Page:
109-112
Column:
研究论文
publishdate:
2007-06-20

Article Info:/Info

Title:
Case Deletion Measures and Generalized Leverage for the Zero Inflated Poisson Regression Models
Article ID:
1000-2006(2007)06-0109-04
Author(s):
LI Ai-ping GU Zheng XIE Feng-chang
Department of Mathematics Nanjing Agricultural University, Nanjing 210095, China
Keywords:
Zero inflated poisson regression model EM algorithm Case-deletion Generalized Cook distance Q-distance Generalized leverage
Classification number :
O212.2
DOI:
10.3969/j.jssn.1000-2006.2007.06.026
Document Code:
A
Abstract:
To detect the effect of count data with many zeros on the zeroinflated poisson regression model, the authors studied the global diagnostics analysis and using the completedata log-likelihood function and the EM algorithm. The one-step approximation of parameter estimates and some statistics, such as generalized cook distance, Q-distance, are obtained. Meantime, the generalized leverage was discussed based on the EM algorithm. Finally, a numerical example was given to illustrate our results.

References

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Last Update: 2013-05-20