Results 1 to 10 of about 1,087,600 (300)

On Zero-Inflated Alternative Hyper-Poisson Distribution

open access: yesStatistica, 2022
Here we develop a zero-inflated version of the alternative hyper-Poisson distribution and discuss its important statistical properties such as probability generating function, expressions for mean, variance, factorial moments, skewness, kurtosis ...
Satheesh Kumar, Rakhi Ramachandran
doaj   +4 more sources

Risk-adjusted zero-inflated Poisson CUSUM charts for monitoring influenza surveillance data [PDF]

open access: yesBMC Medical Informatics and Decision Making, 2021
Background The influenza surveillance has been received much attention in public health area. For the cases with excessive zeroes, the zero-inflated Poisson process is widely used.
Yueying Tan   +7 more
doaj   +2 more sources

Statistical inference for zero-and-one-inflated poisson models

open access: yesStatistical Theory and Related Fields, 2017
In this paper, a zero-and-one-inflated Poisson (ZOIP) model is studied. The maximum likelihood estimation and the Bayesian estimation of the model parameters are obtained based on data augmentation method.
Yincai Tang, Wenchen Liu, Ancha Xu
doaj   +2 more sources

Regression models for count data with excess zeros: A comparison using survey data [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2023
Presence of excess zeros and the distributions are major concern in modeling count data. Zero inflated and hurdle models are regression techniques which can handle zero inflated count data.
Bhaskar, Adhin   +3 more
doaj   +1 more source

Application of Mixture Models for Doubly Inflated Count Data

open access: yesAnalytics, 2023
In health and social science and other fields where count data analysis is important, zero-inflated models have been employed when the frequency of zero count is high (inflated).
Monika Arora, N. Rao Chaganty
doaj   +1 more source

Distribution of clones among hosts for the lizard malaria parasite Plasmodium mexicanum [PDF]

open access: yesPeerJ, 2021
Background Malaria parasites reproduce asexually, leading to the production of large numbers of genetically identical parasites, here termed a clonal line or clone.
Allison T. Neal
doaj   +2 more sources

PEMODELAN JUMLAH KEMATIAN BAYI DI KOTA BANDUNG DENGAN MENGGUNAKAN REGRESI ZERO-INFLATED POISSON

open access: yesJurnal Matematika UNAND, 2021
Kematian bayi merupakan salah satu indikator dalam menentukan tingkat kesehatan masyarakat. Salah satu upaya untuk mengurangi jumlah kematian bayi adalah dengan mengkaji faktor-faktor penyebabnya.
AMALIA DWI PUTRI   +2 more
doaj   +1 more source

MODELLING ZERO-INFLATED OVER DISPERSED DENGUE DATA VIA ZERO-INFLATED POISSON INVERSE GAUSSIAN REGRESSION MODEL: A CASE STUDY OF BANGLADESH [PDF]

open access: yesActa Scientifica Malaysia
Bangladesh has been noted for experiencing some of the most susceptible dengue outbreaks in Asia; the country’s location, dense population, and changing environment all play major roles in this.
Sukanta Chakraborty   +1 more
doaj   +1 more source

Modeling the distribution of new MRI cortical lesions in multiple sclerosis longitudinal studies. [PDF]

open access: yesPLoS ONE, 2011
ObjectiveRecent studies have shown the relevance of the cerebral grey matter involvement in multiple sclerosis (MS). The number of new cortical lesions (CLs), detected by specific MRI sequences, has the potential to become a new research outcome in ...
Maria Pia Sormani   +5 more
doaj   +1 more source

Zero to k Inflated Poisson Regression Models with Applications

open access: yesJournal of Statistical Theory and Applications (JSTA), 2023
In the count data set, the frequency of some points may occur more than expected under the standard data analysis models. Indeed, in many situations, the frequencies of zero and of some other points tend to be higher than those of the Poisson.
Hadi Saboori, Mahdi Doostparast
doaj   +1 more source

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