﻿ 半变系数再生散度混合效应模型的影响分析

# 半变系数再生散度混合效应模型的影响分析 Influence Analysis of Semivarying Coefficient Reproductive Dispersion Mixed Models

Abstract:

This paper proposes several case-deletion as well as local influence measures for assessing the influence of an observation for semivarying coefficient reproductive dispersion mixed models. The essential idea is to treat the latent random effects in the model as missing data and estimate unknown parameters by acceleration of Monte Carlo EM algorithm. Onthe basis of the Q-function which is associated with the conditional expectation of the complete-data log-likelihood, we generate generalized Cook Distance. Moreover, three different perturbation schemes are discussed. Finallyone real illustrative example is presented to prove the methodology.

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