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A Comparison of Generalized Poisson Distribution for Modeling Chromosome Aberrations

✍ Scribed by Carl M.-S. Lee; Felix Famoye

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
584 KB
Volume
38
Category
Article
ISSN
0323-3847

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✦ Synopsis

Various models have been developed for modeling the distribution of chromosome aberrations in the literature (e. g. CONSUL, 1989). Generalized Poisson distribution is among the popular ones. The parameters of this distribution provide meaningful interpretation of the induction mechanism of the chromosome aberrations. In this article, we apply several estimation methods to estimate the generalized Poisson parameters for fitting the number of chromosome aberrations under different dosages of radiations. The methods compared are moment, maximum likelihood, minimum chi-square, weighted discrepancy and empirically weighted rates of change. Our study suggests that the empirically weighted rates of change method results in smallest Mean Square Error and Mean Absolute Error for most dosages of radiations. The data used for this comparison are from JANARDAN and SCHAEFFER (1977).

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