نتایج جستجو برای: zero inflated generalized poisson regression model

تعداد نتایج: 2574473  

Journal: :Communications for Statistical Applications and Methods 2018

2009
Vinzenz Erhardt Claudia Czado

Erhardt and Czado (2008) suggest an approximative method for sampling highdimensional count random variables with a specified Pearson correlation. They utilize Gaussian copulae for the construction of multivariate discrete distributions. A major task is to determine the appropriate copula parameters for the achievement of a specified target correlation. Erhardt and Czado (2008) develop an optim...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1393

روابط بین مراحل زندگی (لاروی، گذر و بلوغ) شانه دار mnemiopsis leidyi و شاخصه های فیزیکوشیمیایی و زیستی با استفاده از مدل های مختلف بر اساس تغییرات زمانی (ماه) و مکانی (ترانسکت، ایستگاه و لایه) در امتداد سواحل مازندران طی سال 1391 ارزیابی شد. به منظور بالا بردن عملکرد مدل ها، از گونه های غالب پلانکتونی در هر فصل (90% تراکم کل) برای مدل سازی استفاده گردید. برای درک بهتر از وضعیت اکولوژیکی شانه ...

Journal: :Biogeosciences 2022

Abstract. This study presents a novel ensemble regression model for forecasts of the hypoxic area (HA) in Louisiana–Texas (LaTex) shelf. The combines zero-inflated Poisson generalized linear (GLM) and quasi-Poisson additive (GAM) considers predictors with hydrodynamic biochemical features. Both models were trained calibrated using daily hindcast (2007–2020) by three-dimensional coupled hydrodyn...

Journal: :Computational Statistics & Data Analysis 2011
Xue-Dong Chen Ying-Zi Fu

Count data are widely existed in the fields of medical trials, public health, surveys and environmental studies. In analyzing count data, it is important to find outwhether the zeroinflation exists or not and how to select the most suitable model. However, the classic AIC criterion formodel selection is invalid when the observations aremissing. In this paper, we develop a new model selection cr...

2013
Nadja Klein Michel Denuit Stefan Lang Thomas Kneib

Generalized additive models for location, scale and shape define a flexible, semiparametric class of regression models for analyzing insurance data in which the exponential family assumption for the response is relaxed. This approach allows the actuary to include risk factors not only in the mean but also in other parameters governing the claiming behavior, like the degree of residual heterogen...

Journal: :Hacettepe journal of mathematics and statistics 2021

In this paper, we propose a new generalization of the Poisson distribution by using concept weighted distribution; trigonometric weight with cosine function is used. We derive some distributional properties distribution, such as cumulative function, moment generating factorial moments, and index dispersion. Then, related model considered for modeling purposes, estimation parameters performed vi...

Journal: :International Journal of Enviornment and Climate Change 2022

Aim: This study was conducted to model the relationship between discrete dependent variable (yellow stem borer population) and continuous weather variables.
 Data Description: The yellow (YSB) population standard meteorological week (SMW) wise variables (temperature, relative humidity, rainfall sunshine hours) data of Warangal centre (Telangana state) generated under All India Co-Ordinated...

2015
Arun Bala Subramaniyan Rong Pan

This paper describes the methodology used for ECMLPKDD 2015 Discovery Challenge on Model Reuse with Bike Rental Station Data (MoReBikeS). The challenge was to predict the number of bikes in the new stations three hours in advance. Initially, the data for the first 25 new stations (station 201 to 225) was provided and various prediction methods were utilized on these test stations and the result...

Journal: :International Journal of Engineering, Science and Technology &b. Lagos 2022

A zero-inflated Poisson (ZIP) distribution is commonly used for modelling process data with single type of defect, and developing appropriate tools instituting statistical control manufacturing processes. However, in reality, such scenarios are very common where more than one defect can occur. For example, occurrences defects like solder short circuits (shorts) absence (skips) on printed circui...

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