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Double Poisson-Tweedie Regression Models

The International Journal of Biostatistics, 2019
AbstractIn this paper, we further extend the recently proposed Poisson-Tweedie regression models to include a linear predictor for the dispersion as well as for the expectation of the count response variable. The family of the considered models is specified using only second-moments assumptions, where the variance of the count response has the formμ ...
Ricardo R. Petterle   +5 more
openaire   +3 more sources

Bivariate Poisson–Poisson model of zero-inflated absenteeism data

Statistics in Medicine, 2006
Bimodal distributions of counts with one mode at zero are often seen in medical research. In a health survey parents were asked the number of days their children missed their activities (Y(1)) and the number of days their children spent in bed (Y(2)) due to illness in the past four weeks. Both variables exhibited zero inflation. We consider a bivariate
Lam, KF, Cheung, YB
openaire   +4 more sources

Stochastic Poisson-Sigma model

ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 2009
Summary: We produce a stochastic regularization of the Poisson-Sigma model of Cattaneo-Felder, which is an analogue regularization of Klauder's stochastic regularization of the Hamiltonian path integral [\textit{J. R. Klauder, S.V. Shabanov}, Mathematical methods of quantum physics (Jagna, 1998), 117--130, Gordon and Breach, Amsterdam (1999; Zbl 1170 ...
openaire   +3 more sources

Random effects Cox models: A Poisson modelling approach [PDF]

open access: possibleBiometrika, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Renjun Ma   +2 more
openaire   +1 more source

Relaxed Poisson cure rate models

Biometrical Journal, 2015
The purpose of this article is to make the standard promotion cure rate model (Yakovlev and Tsodikov, ) more flexible by assuming that the number of lesions or altered cells after a treatment follows a fractional Poisson distribution (Laskin, ). It is proved that the well‐known Mittag‐Leffler relaxation function (Berberan‐Santos, ) is a simple way to ...
Rodrigues, Josemar   +3 more
openaire   +2 more sources

Eccentric Poisson-Boltzmann cell model

Physical Review E, 2000
We solve the nonlinear Poisson-Boltzmann equation around a charged colloidal sphere in an electrolyte that is confined in a cell. The colloid has an eccentric position inside the confining sphere. This models the situation in a highly concentrated charge-stabilized colloidal suspension, where a single colloid simultaneously interacts with the whole ...
, von Grunberg HH, , Belloni
openaire   +2 more sources

The Poisson-Helmholtz-Boltzmann model

The European Physical Journal E, 2011
We present a mean-field model of a one-component electrolyte solution where the mobile ions interact not only via Coulomb interactions but also through a repulsive non-electrostatic Yukawa potential. Our choice of the Yukawa potential represents a simple model for solvent-mediated interactions between ions.
K, Bohinc, A, Shrestha, S, May
openaire   +2 more sources

Poisson wavelets applied to model identification

Journal of Process Control, 1994
Abstract A novel wavelet transform is introduced based on the backward difference of the Poisson probability density function. This family of wavelets is a function of one discrete and two continuous variables. The Poisson wavelet transform is useful for system identification, parameter estimation and model validation.
Karlene A. Kosanovich   +2 more
openaire   +1 more source

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