GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.

Understanding why a random variable is actually random has been in the core of Statistics from its beginnings. The generalized Waring regression model for count data explains that inherent variability is given by three possible sources: randomness, liability and proneness. The model extends the nega...

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Main Authors: Silverio Vílchez-López, Antonio José Sáez-Castillo, María José Olmo-Jiménez
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC5148598?pdf=render
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author Silverio Vílchez-López
Antonio José Sáez-Castillo
María José Olmo-Jiménez
author_facet Silverio Vílchez-López
Antonio José Sáez-Castillo
María José Olmo-Jiménez
author_sort Silverio Vílchez-López
collection DOAJ
description Understanding why a random variable is actually random has been in the core of Statistics from its beginnings. The generalized Waring regression model for count data explains that inherent variability is given by three possible sources: randomness, liability and proneness. The model extends the negative binomial regression model and it is not included in the family of generalized linear models. In order to avoid that shortcoming, we developed the GWRM R package for fitting, describing and validating the model. The version we introduce in this communication provides a new design of the modelling function as well as new methods operating on the associated fitted model objects, so that the new software integrates easily into the computational toolbox for modelling count data in R. The release of a plug-in in order to use the package from the interface R Commander tries to contribute to the spreading of the model among non-advanced users. We illustrate the usage and the possibilities of the software with two examples from the fields of health and sport.
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spelling doaj.art-22048fbc36414d14959bbb4cc07d5b462022-12-22T03:15:29ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-011112e016757010.1371/journal.pone.0167570GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.Silverio Vílchez-LópezAntonio José Sáez-CastilloMaría José Olmo-JiménezUnderstanding why a random variable is actually random has been in the core of Statistics from its beginnings. The generalized Waring regression model for count data explains that inherent variability is given by three possible sources: randomness, liability and proneness. The model extends the negative binomial regression model and it is not included in the family of generalized linear models. In order to avoid that shortcoming, we developed the GWRM R package for fitting, describing and validating the model. The version we introduce in this communication provides a new design of the modelling function as well as new methods operating on the associated fitted model objects, so that the new software integrates easily into the computational toolbox for modelling count data in R. The release of a plug-in in order to use the package from the interface R Commander tries to contribute to the spreading of the model among non-advanced users. We illustrate the usage and the possibilities of the software with two examples from the fields of health and sport.http://europepmc.org/articles/PMC5148598?pdf=render
spellingShingle Silverio Vílchez-López
Antonio José Sáez-Castillo
María José Olmo-Jiménez
GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
PLoS ONE
title GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
title_full GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
title_fullStr GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
title_full_unstemmed GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
title_short GWRM: An R Package for Identifying Sources of Variation in Overdispersed Count Data.
title_sort gwrm an r package for identifying sources of variation in overdispersed count data
url http://europepmc.org/articles/PMC5148598?pdf=render
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AT antoniojosesaezcastillo gwrmanrpackageforidentifyingsourcesofvariationinoverdispersedcountdata
AT mariajoseolmojimenez gwrmanrpackageforidentifyingsourcesofvariationinoverdispersedcountdata