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pro vyhledávání: '"Peyhardi, Jean"'
In this article, we develop a new class of multivariate distributions adapted for count data, called Tree P{\'o}lya Splitting. This class results from the combination of a univariate distribution and singular multivariate distributions along a fixed
Externí odkaz:
http://arxiv.org/abs/2404.19528
Count data are omnipresent in many applied fields, often with overdispersion. With mixtures of Poisson distributions representing an elegant and appealing modelling strategy, we focus here on how the tail behaviour of the mixing distribution is relat
Externí odkaz:
http://arxiv.org/abs/2305.17095
Count data are omnipresent in many applied fields, often with overdispersion due to an excess of zeroes or extreme values. With mixtures of Poisson distributions representing an elegant and appealing modelling strategy, we focus here on the challengi
Externí odkaz:
http://arxiv.org/abs/2204.10649
Publikováno v:
In Journal of Theoretical Biology 7 April 2024 582
Considering discrete models, the univariate framework has been studied in depth compared to the multivariate one. This paper first proposes two criteria to define a sensu stricto multivariate discrete distribution. It then introduces the class of spl
Externí odkaz:
http://arxiv.org/abs/1802.02074
Autor:
Barbieri, Antoine, Peyhardi, Jean, Conroy, Thierry, Gourgou, Sophie, Lavergne, Christian, Mollevi, Caroline
Statistical research regarding health-related quality of life (HRQoL) is a major challenge to better evaluate the impact of the treatments on their everyday life and to improve patients' care. Among the models that are used for the longitudinal analy
Externí odkaz:
http://arxiv.org/abs/1611.06851
Autor:
Peyhardi, Jean
Le but de cette thèse est de proposer une nouvelle classe de GLMs pour une variable réponse catégorielle structurée hiérarchiquement, comme une variable partiellement ordonnée par exemple. Une première étape a été de mettre en évidence les
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00936845
http://tel.archives-ouvertes.fr/docs/00/93/68/45/PDF/Book.pdf
http://tel.archives-ouvertes.fr/docs/00/93/68/45/PDF/Book.pdf
Akademický článek
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Publikováno v:
In Journal of Multivariate Analysis January 2021 181
In categorical data analysis, several regression models have been proposed for hierarchically-structured response variables, e.g. the nested logit model. But they have been formally defined for only two or three levels in the hierarchy. Here, we intr
Externí odkaz:
http://arxiv.org/abs/1405.5802