نتایج جستجو برای: zero inflated

تعداد نتایج: 153089  

Journal: :Journal of Modern Applied Statistical Methods 2009

Journal: :Open journal of statistics 2015
William D Johnson Jeffrey H Burton Robbie A Beyl Jacob E Romer

Zero-inflated distributions are common in statistical problems where there is interest in testing homogeneity of two or more independent groups. Often, the underlying distribution that has an inflated number of zero-valued observations is asymmetric, and its functional form may not be known or easily characterized. In this case, comparisons of the groups in terms of their respective percentiles...

Journal: :Computational Statistics & Data Analysis 2011
Xue-Dong Chen Ying-Zi Fu

Count data are widely existed in the fields of medical trials, public health, surveys and environmental studies. In analyzing count data, it is important to find outwhether the zeroinflation exists or not and how to select the most suitable model. However, the classic AIC criterion formodel selection is invalid when the observations aremissing. In this paper, we develop a new model selection cr...

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