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SSRN Electronic Journal
Article . 2010 . Peer-reviewed
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Predicting Censored Count Data with COM-Poisson Regression

Authors: Kimberly F. Sellers; Galit Shmueli;

Predicting Censored Count Data with COM-Poisson Regression

Abstract

Censored count data are encountered in many applications, often due to a data collection mechanism that introduces censoring. A common example is questionnaires with question answers of the type 0,1,2,3. We consider the problem of predicting a censored output variable Y, given a set of complete predictors X. The common solution would be to use adaptations for Poisson or negative binomial regression models that account for the censoring. We study two alternatives that allow for both over- and under-dispersion: Conway-Maxwell-Poisson (COM-Poisson) regression, and generalized Poisson regression models, each with adaptations for censoring. We compare the predictive power of these models by applying them to a German panel dataset on fertility, where we introduce censoring of di�erent levels into the outcome variable. We explore two additional variants: (1) using the mean versus the median of the predictive count distribution, and (2) ensembles of COM-Poisson models based on the parametric and non-parametric bootstrap

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
bronze