نتایج جستجو برای: poisson and negative binomial regression models

تعداد نتایج: 16979133  

Journal: :Clinical Epidemiology and Global Health 2021

BackgroundCount data represents the number of occurrences an event within a fixed period time. In count modelling, overdispersion is inevitable. Sometimes, this may not be just due to excess zeros but presence two or more mixtures. Hence main objective examine for mixtures if any, with and compare Generalized Poisson model, Mixture models other using real time simulated data.MethodsThree over-d...

2008
AIHUA XIA

The distributions of the run occurrences for a sequence of independent and identically distributed (i.i.d.) experiments are usually obtained by combinatorial methods (see Balakrishnan and Koutras (2002, Chapter 5)) and the resulting formulae are often very tedious, while the distributions for non i.i.d. experiments are generally intractable. It is therefore of practical interest to find a suita...

Journal: :Jurnal Sains dan Seni ITS (e-journal) 2023

Data Dinas Kesehatan Kabupaten Probolinggo tahun 2020 menyatakan Angka Kematian Bayi (AKB) di sebesar 8,11. tersebut tergolong tinggi jika dibandingkan dengan AKB Provinsi Jawa Timur 6,3. Sehingga perlu dilakukan analisis untuk mengetahui faktor-faktor yang mempengaruhi jumlah kematian bayi 2020. Regresi poisson merupakan sesuai dalam pemodelan kasus data diskrit. Namun regresi mensyaratkan kon...

2017
JIGUANG SHAO QIUYUAN WANG

Abstract: This paper introduces three generalized geometric distributions: the binomial, negative binomial and Poisson distribution of the same order k. The generating functions and probability distributions of them are investigated, and then the corresponding modes of the distributions are discussed. By the Fibonacci sequence, the modes of the negative binomial distribution of order k are deri...

Journal: یافته 2005
javad Behboodian , mohammad Rafiee, mohammad taghi Ayatollahi ,

Background: Mothers’ delivery is one of the most common hospitalization factors throughout the world and it’s modeling can explain distribution and effective factors on rising and decreasing of it. The objective of the present study was a suitable modeling for mother hospitalization time and comparing it with different models. Materials & Methods: Present study is an observational and cross-s...

2007
Srinivas Reddy Geedipally Dominique Lord

The most common probabilistic structure of the models used by transportation safety analysts for modeling motor vehicle crashes are the traditional Poisson and Poissongamma (or Negative Binomial) distributions. Since crash data have been shown to exhibit over-dispersion, Poisson-gamma models are usually preferred over Poisson regression models. Up until recently, the dispersion parameter of Poi...

2017
Sheng Xu Kristina Zierold Huiying Lin

GENERALIZED ESTIMATING EQUATION BASED ZERO-INFLATED MODEL WITH APPLICATION TO EXAMINING THE RELATIONSHIP BETWEEN DENTAL CARIES AND FLUORIDE EXPOSURES Sheng Xu April 16, 2013 In the study of dental caries, the number of caries is frequently characterized by over-dispersion and excessive zeros. In addition, the numbers of caries from the same subject are correlated. Zero-Inflated (ZI) regression ...

Journal: :International Journal of Pure and Apllied Mathematics 2013

Journal: :international journal of industrial engineering and productional research- 0
mohammad saber fallahnezhad department of industrial engineering, faculty of engineering, yazd university, yazd, iran hasan hosseini nasab department of industrial engineering, faculty of engineering, yazd university, yazd, iran

in this research, a new control policy for the acceptance sampling problem is introduced. decision is made based on the number of defectives items in an inspected batch. the objective of the model is to find a constant control level that minimizes the total costs, including the cost of rejecting the batch, the cost of inspection and the cost of defective items. the optimization is performed by ...

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