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Dissertations / Theses on the topic 'Poissom regression'

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Published: 8 September 2021

Last updated: 29 July 2025

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1

van, de Ven Remy Julius. "Estimation in mixed Poisson regression models." Thesis, The University of Sydney, 1996. https://hdl.handle.net/2123/26822.

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This thesis considers estimation of the parameters associated with models for count data displaying over-dispersion relative to the Poisson distribution where the over-dispersion is modelled using mixing. It is divided into seven chapters with Chapters Two to Five specific to the over-dispersed Poisson problem whilst Chapter Seven, which uses results from Chapter Six, is more general. The motivation for some of this work was the modelling of repeat counts of the number of fibres contained on microscopic slides as obtained by asbestos fibre counters and the subsequent estimation of mean fibre c

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2

Nilsson, Philip, and Sebastian Nilsson. "Application of Poisson Regression on Traffic Safety." Thesis, KTH, Matematisk statistik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168201.

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This study presents a model that explains the traffic fatality by exploring the Poisson regression model using two types of explanatory variables – referred to as internal and external factors. Internal factors contain variables closely linked to traffic safety, such as speed limits and belt usage (Strandroth et al., 2012), whereas external factors comprise a set of variables that the Swedish Transport Administration cannot control, such as the economy and demographic change (Wiklund et al., 2012). The purpose of the study is to evaluate the impact that internal and external factors have on th

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Ludvigsen, Jesper, and Adam Grünwald. "Predicting the NHL playoffs with Poisson regression." Thesis, Uppsala universitet, Statistiska institutionen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323435.

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Using historical data from the past two seasons of the National Hockey League, three different prediction models based on Poisson regression are developed. The aim is to determine whether taking into account the recent form of a team as well as data from how they have previously performed against their opponent can help make better predictions of how many goals they will score against this opponent and thereby calculate the likelihood of each outcome. The three models are evaluated using different measures, for example comparing the odds yielded by the models against the odds of bookmakers. Di

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4

White, Lisa A. "Predicting hospital admissions with Poisson regression analysis." Thesis, Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Jun/09Jun%5FWhite.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2009.<br>Thesis Advisor(s): Whitaker, Lyn R. "June 2009." Description based on title screen as viewed on July 14, 2009. Author(s) subject terms: Poisson regression, MTF, military treatment facility, hospital admissions. Includes bibliographical references (p. 53-54). Also available in print.

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5

Roemmele, Eric S. "A Flexible Zero-Inflated Poisson Regression Model." UKnowledge, 2019. https://uknowledge.uky.edu/statistics_etds/38.

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A practical problem often encountered with observed count data is the presence of excess zeros. Zero-inflation in count data can easily be handled by zero-inflated models, which is a two-component mixture of a point mass at zero and a discrete distribution for the count data. In the presence of predictors, zero-inflated Poisson (ZIP) regression models are, perhaps, the most commonly used. However, the fully parametric ZIP regression model could sometimes be restrictive, especially with respect to the mixing proportions. Taking inspiration from some of the recent literature on semiparametric mi

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6

Khoury, Bassel. "A poisson regression model for assessing force majeure claims." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103839.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 103-104).<br>Empirical legal analysis is an emerging discipline of statistical and legal scholarship. Despite its importance, however, there is a lack of empirical research on the affirmative defense of force majeure, which eliminates liability for a breach of contract in the case of an unforeseeable and uncontrollable event that renders performance impossible. This study seeks to fill the gap in the

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Zaldivar, Cynthia. "On the Performance of some Poisson Ridge Regression Estimators." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3669.

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Multiple regression models play an important role in analyzing and making predictions about data. Prediction accuracy becomes lower when two or more explanatory variables in the model are highly correlated. One solution is to use ridge regression. The purpose of this thesis is to study the performance of available ridge regression estimators for Poisson regression models in the presence of moderately to highly correlated variables. As performance criteria, we use mean square error (MSE), mean absolute percentage error (MAPE), and percentage of times the maximum likelihood (ML) estimator produc

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8

Mendes, Clarice Camargo. "Modelos para dados de contagem com aplicações." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307184.

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Orientador: Hildete Prisco Pinheiro<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-08-08T17:00:10Z (GMT). No. of bitstreams: 1 Mendes_ClariceCamargo_M.pdf: 1127292 bytes, checksum: f015352011300a41bb50c17c81a49bb1 (MD5) Previous issue date: 2007<br>Resumo: Ao lidarmos com dados de contagem, uma abordagem possível é estimar um Modelo Linear Generalizado com distribuição de Poisson. Freqüentemente nestes modelos costuma surgir o problema da superdispersão, um fenômeno que aparece q

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Lora, Mayra Ivanoff. "Modelos de regressão beta-binomial/poisson para contagens bivariadas." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/45/45133/tde-09062011-095707/.

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Propomos um modelo Beta-Binomial/Poisson para dados provenientes de um estudo com doentes de Parkinson, que consistiu em contar durante um minuto quantas tarefas foram realizadas e destas, quantas de maneira correta, antes e depois de um treinamento. O objetivo era verificar se o treinamento aumentava o número de tentativas e a porcentagem de acerto, o que destaca o aspecto bivariado do problema. Esse modelo considera tal aspecto, usa uma distribuição mais adequada a dados de contagem e ainda suporta a sobredispersão presente nos dados. Obtemos estimadores de máxima verossimilhança dos parâmet

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Lora, Mayra Ivanoff. "Modelos Beta-Binomial/Poisson-Gama para contagens bivariadas repetidas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/45/45133/tde-27082009-120419/.

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Em Lora e Singer (Statistics in Medicine, 2008), propusemos um modelo Beta- Binomial/Poisson p-variado para análise dos dados provenientes de um estudo que consistiu em contar o número de tentativas e acertos de um exercício manual com duração de um minuto realizado por doentes de Parkinson, antes e depois de um treinamento. O objetivo era verificar se o treinamento aumentava o número de tentativas e a porcentagem de acerto, o que destaca o aspecto bivariado do problema. Esse modelo leva tais características em consideração, usa uma distribuição adequada para dados de contagem e ainda acomoda

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11

CHRISTO, ELIANE DA SILVA. "POISSON REGRESSION MULTILEVEL MODEL: AN APLICATION TO SAEBS REPETENCE DATE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2001. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1722@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A maioria das pesquisas sociais e de comportamento apresenta uma estrutura hierárquica, a qual pode ser caracterizada pela existência de agrupamento das unidades de análise. Nesta dissertação empregou-se modelos multiníveis aos dados de avaliação educacional do Sistema Nacional de Avaliação Básica (SAEB). O objetivo foi analisar a Repetência Escolar dos alunos de 4.a série do ensino fundamental na disciplina de matemática. Foram feitas regressões de Poisson com a variável Repetência como resposta e várias variáveis explic

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12

Ho, Linda Lee. "Análise de contagens multivariadas." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/3/3136/tde-04072017-101027/.

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Este trabalho apresenta uma análise estatística de contagens multivariadas proveniente de várias populações através de modelos de regressão. Foram considerados casos onde os vetores respostas obedeçam às distribuições Poisson multivariada e Poisson log-normal multivariada. Esta distribuição admite correlação de ambos sinais entre componentes do vetor resposta, enquanto que as distribuições mais usuais para dados de contagens (como a Poisson multivariada) admitem apenas correlação positiva entre as componentes do vetor resposta. São discutidos métodos de estimação e testes de hipóteses sobre os

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13

Kutschenko, Andressa. "Associação entre tempestades geomagnéticas e internações por infarto agudo do miocárdio." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/17/17139/tde-18012013-094335/.

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Os diversos fenômenos solares mostram que a sua atividade não é constante, sendo as manchas solares observadas em sua fotosfera um indicador de atividade do Sol. Os números dessas manchas seguem um ciclo de 11 anos que alterna entre máximos e mínimos; quanto maior o número de manchas, maior o número de erupções no Sol. A literatura médica vem mostrando algumas evidências de que a atividade solar possui alguma relação com a predisposição das pessoas a algumas doenças. As tempestades geomagnéticas são associadas a doenças cardiovasculares, mudanças na pressão arterial sistólica, gravidade da cri

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14

hao, zengyi. "A simulation study of Poisson Regression model with sample selection effect." Thesis, Örebro universitet, Handelshögskolan vid Örebro Universitet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-26528.

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15

Wang, Yanping. "Optimal Experimental Designs for the Poisson Regression Model in Toxicity Studies." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28426.

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Optimal experimental designs for generalized linear models have received increasing attention in recent years. Yet, most of the current research focuses on binary data models especially the one-variable first-order logistic regression model. This research extends this topic to count data models. The primary goal of this research is to develop efficient and robust experimental designs for the Poisson regression model in toxicity studies. D-optimal designs for both the one-toxicant second-order model and the two-toxicant interaction model are developed and their dependence upon the model parame

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16

Jansakul, Naratip. "Some aspects of modelling overdispersed and zero-inflated count data." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364435.

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17

Li, Joseph T. C. "A poisson regression analysis of the academic setback in Naval Training deadtime." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA387437.

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Thesis (M.S. in Management) Naval Postgraduate School, December 2000.<br>Thesis advisor(s): Robert Read, Dennis Mar. "December 2000." Includes bibliographical references (p. 45). Also available in print.

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18

Piri, Sepehr. "Parametric, Nonparametric and Semiparametric Approaches in Profile Monitoring of Poisson Data." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/5023.

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Profile monitoring is a relatively new approach in quality control best used when the process data follow a profile (or curve). The majority of previous studies in profile monitoring focused on the parametric modeling of either linear or nonlinear profiles under the assumption of the correct model specification. Our work considers those cases where the parametric model for the family of profiles is unknown or, at least uncertain. Consequently, we consider monitoring Poisson profiles via three methods, a nonparametric (NP) method using penalized splines, a nonparametric (NP) method using wavele

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19

Shih, Li-Hsing. "The nonhomogeneous Poisson process with covariate effects /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1991.

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20

Zeileis, Achim, Christian Kleiber, and Simon Jackman. "Regression Models for Count Data in R." Foundation for Open Access Statistics, 2008. http://epub.wu.ac.at/4986/1/Zeileis_etal_2008_JSS_Regression%2DModels%2Dfor%2DCount%2DData%2Din%2DR.pdf.

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The classical Poisson, geometric and negative binomial regression models for count data belong to the family of generalized linear models and are available at the core of the statistics toolbox in the R system for statistical computing. After reviewing the conceptual and computational features of these methods, a new implementation of hurdle and zero-inflated regression models in the functions hurdle() and zeroinfl() from the package pscl is introduced. It re-uses design and functionality of the basic R functions just as the underlying conceptual tools extend the classical models. Both hurdle

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21

Soumare, Ibrahim. "Comparing Performance of ANOVA to Poisson and Negative Binomial Regression When Applied to Count Data." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/31887.

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Analysis of Variance (ANOVA) is the easiest and most widely used model nowadays in statistics. ANOVA however requires a set of assumptions for the model to be a valid choice and for the inferences to be accurate. Among many, ANOVA assumes the data in question is normally distributed and homogenous. However, data from most disciplines does not meet the assumption of normality and/or equal variance. Regrettably, researchers do not always check whether the assumptions are met, and if these assumptions are violated, inferences might well be wrong. We conducted a simulation study to compare the pe

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Zeileis, Achim, Christian Kleiber, and Simon Jackman. "Regression Models for Count Data in R." Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 2007. http://epub.wu.ac.at/1168/1/document.pdf.

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The classical Poisson, geometric and negative binomial regression models for count data belong to the family of generalized linear models and are available at the core of the statistics toolbox in the R system for statistical computing. After reviewing the conceptual and computational features of these methods, a new implementation of zero-inflated and hurdle regression models in the functions zeroinfl() and hurdle() from the package pscl is introduced. It re-uses design and functionality of the basic R functions just as the underlying conceptual tools extend the classical models. Both model c

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Prasad, Jonathan P. "Zero-Inflated Censored Regression Models: An Application with Episode of Care Data." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/2226.

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The objective of this project is to fit a sequence of increasingly complex zero-inflated censored regression models to a known data set. It is quite common to find censored count data in statistical analyses of health-related data. Modeling such data while ignoring the censoring, zero-inflation, and overdispersion often results in biased parameter estimates. This project develops various regression models that can be used to predict a count response variable that is affected by various predictor variables. The regression parameters are estimated with Bayesian analysis using a Markov chain Mont

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Verssani, Bruna Aparecida Wruck. "Modelo de regressão para sistemas reparáveis: um estudo da confiabilidade de colhedoras de cana-de-açúcar." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-22012019-173525/.

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A análise de confiabilidade desempenha um papel fundamental para estudos de durabilidade e otimização de tempos de reparo em sistemas reparáveis. Equipamentos como colhedoras de cana-de-açúcar que após a falha e um reparo voltam a exercer sua função objetivo são classificados como sistemas reparáveis. O objetivo deste trabalho consistiu em propor alternativas de modelagem para sistemas complexos, que apresentam grande variabilidade no comportamento da função intensidade de falha. Foi proposta a nova distribuição odd log-logística Weibull flexível generalizada (GOLLFW) e um modelo de regressão

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AZEVEDO, Jullianna Vitório Vieira de. "Influência das variações climáticas na ocorrência de doenças respiratórias por gripe em idosos em municípios do Estado da Paraíba." Universidade Federal de Campina Grande, 2015. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/905.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-06-08T11:39:56Z No. of bitstreams: 1 JULLIANNA VITÓRIO VIEIRA DE AZEVEDO - DISSERTAÇÃO (PPGRN) 2015.pdf: 2576177 bytes, checksum: a2d2205824cb66d177cc7165ce092601 (MD5)<br>Made available in DSpace on 2018-06-08T11:39:56Z (GMT). No. of bitstreams: 1 JULLIANNA VITÓRIO VIEIRA DE AZEVEDO - DISSERTAÇÃO (PPGRN) 2015.pdf: 2576177 bytes, checksum: a2d2205824cb66d177cc7165ce092601 (MD5) Previous issue date: 2015-02-27<br>Neste trabalho objetivou-se avaliar os efeitos das variações sazonais do clima na incidência de doenças respiratórias p

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Fang, Xiaoqiong. "Mixtures-of-Regressions with Measurement Error." UKnowledge, 2018. https://uknowledge.uky.edu/statistics_etds/36.

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Finite Mixture model has been studied for a long time, however, traditional methods assume that the variables are measured without error. Mixtures-of-regression model with measurement error imposes challenges to the statisticians, since both the mixture structure and the existence of measurement error can lead to inconsistent estimate for the regression coefficients. In order to solve the inconsistency, We propose series of methods to estimate the mixture likelihood of the mixtures-of-regressions model when there is measurement error, both in the responses and predictors. Different estimators

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27

Mostafa, Abdelelah M. "Regression approach to software reliability models." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001648.

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Ellison, Natalie Noel. "The Effect of Smoking on Tuberculosis Incidence in Burdened Countries." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/2977.

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It is estimated that one third of the world's population is infected with tuberculosis. Though once thought a "dead" disease, tuberculosis is very much alive. The rise of drug resistant strains of tuberculosis, and TB-HIV coinfection have made tuberculosis an even greater worldwide threat. While HIV, poverty, and public health infrastructure are historically assumed to affect the burden of tuberculosis, recent research has been done to implicate smoking in this list. This analysis involves combining data from multiple sources in order determine if smoking is a statistically significant factor

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Wan, Chung-him, and 溫仲謙. "Analysis of zero-inflated count data." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43703719.

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Wan, Chung-him. "Analysis of zero-inflated count data." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43703719.

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Reineck, Viktor, and Folke Ulfsparre. "The Impact of Weather on Residential Fires in Sweden: A Regression Analysis." Thesis, KTH, Matematisk statistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-254304.

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The purpose of this report is to investigate possible relationships between the number of residential fires in Sweden and various weather parameters. The study is conducted based on a hypothesis as stated by the MSB, the Swedish Civil Contingencies Agency, that behavioral factors related to weather can have an influence on the number of residential fires. Generalized linear models within the regression analysis have been used and specifically Poisson and negative binomial regression. The aim was to map the possible connection and determine if it was possible to use the analysis as a tool to im

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Coêlho, Micheline de Sousa Zanotti Stagliorio. "Uma análise estatística com vistas a previsibilidade de internações por doenças respiratórias em função das condições meteorotrópicas na cidade de São Paulo." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/14/14133/tde-20022008-224808/.

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O conhecimento antecipado das condições meteorológicas poderá ajudar a sociedade a evitar prejuízos e desperdícios de recursos humanos e materiais. Portanto, o objetivo deste estudo foi obter a partir de uma análise estatística um modelo capaz de predizer internações a partir dos dados de poluição do ar e índices biometeorológicos. Para isso, foram utilizados dados diários de 1997 a 2000, referentes à cidade de São Paulo. Os dados de internações por doenças respiratórias foram divididos em três categorias: AVAS (Afecções Vias Aéreas Superiores), AVAI (Afecções das Vias Aéreas Inferiores) e IP

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Bhattarai, Shreejana. "Understanding the relationship between land use/land cover and malaria in Nepal." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/96214.

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Malaria is one of the leading causes of mortality and morbidity globally. Land use/land cover (LULC) change have been found to affect the transmission and distribution of malaria in other regions, but no study has attempted to examine such relationships in Nepal. Therefore, this study was conducted in Nepal to assess LULC change between 2000 and 2010, to study the spatial and temporal trend of malaria incidence rate (MIR) between 1999 and 2015, and to understand the relationship between LULC and malaria. The land cover types used for this study are forest, water bodies, agriculture, grassland,

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Carneseca, Estela Cristina. "Problemas respiratórios e fatores ambientais: uma análise Bayesiana para dados de Ribeirão Preto." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/17/17139/tde-02052012-094850/.

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Estudos envolvendo o meio ambiente estão sendo cada vez mais desenvolvidos devido ao fato dos níveis de poluição e das mudanças climáticas estarem causando a degradação da qualidade do ar e dos reservatórios de água de maneira alarmante nos últimos anos, comprometendo sobretudo, a qualidade de vida do ser humano. Dado que estes fatores são preponderantes nos agravos e complicações respiratórias dos indivíduos, buscou-se compreender com este estudo a relação entre as condições atmosféricas e os problemas respiratórios nos residentes do município de Ribeirão Preto, interior de São Paulo, onde há

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Bäcklund, JOakim, and Johdet Nils. "A Bayesian approach to predict the number of soccer goals : Modeling with Bayesian Negative Binomial regression." Thesis, Linköpings universitet, Statistik och maskininlärning, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149028.

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This thesis focuses on a well-known topic in sports betting, predicting the number of goals in soccer games.The data set used comes from the top English soccer league: Premier League, and consists of games played in the seasons 2015/16 to 2017/18.This thesis approaches the prediction with the auxiliary support of the odds from the betting exchange Betfair. The purpose is to find a model that can create an accurate goal distribution. %The other purpose is to investigate whether Negative binomial distribution regressionThe methods used are Bayesian Negative Binomial regression and Bayesian Poiss

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Vieira, Nilson Cesar Galvão [UNESP]. "Utilização de dados fornecidos por satélites para determinação de riscos ambientais." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/136221.

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Vigas, Valdemiro Piedade. "Extensões dos modelos de sobrevivência referente a distribuição Weibull." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/4579.

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Made available in DSpace on 2016-06-02T20:06:09Z (GMT). No. of bitstreams: 1 5822.pdf: 1106242 bytes, checksum: 613a82d7af4c6f40b60637e4c7122121 (MD5) Previous issue date: 2014-03-07<br>Financiadora de Estudos e Projetos<br>In this dissertation, two models of probability distributions for the lifetimes until the occurrence of the event produced by a specific cause for elements in a population are reviewed. The first revised model is called the Weibull-Poisson (WP) which has been proposed by Louzada et al. (2011a). This model generalizes the exponential-Poisson distributions proposed by Kus (

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Glórias, Ludgero Miguel Carraça. "Estimating a knowledge production function and knowledge spillovers : a new two-step estimation procedure of a Spatial Autoregressive Poisson Model." Master's thesis, Instituto Superior de Economia e Gestão, 2020. http://hdl.handle.net/10400.5/20711.

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Mestrado em Econometria Aplicada e Previsão<br>Vários estudos econométricos procuram explicar os determinantes da criação de conhecimento usando como variável dependente o número de patenteamentos numa região. Alguns destes procuram captar os efeitos de Knowledge Spillovers através de modelos lineares que incorporam dependência espacial. No entanto, nenhum estudo foi encontrado que captasse este efeito, tendo em atenção a natureza discreta da variável dependente. Este trabalho pretende preencher essa lacuna propondo um novo estimador de máxima verosimilhança a dois passos para um modelo Poisso

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Nóbrega, Luciana Alves da. "Modelagem da influência de poluentes atmosféricos veiculares e fatores meteorológicos em afecções respiratórias." Universidade Federal da Paraíba, 2013. http://tede.biblioteca.ufpb.br:8080/handle/tede/6539.

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Made available in DSpace on 2015-05-14T12:47:14Z (GMT). No. of bitstreams: 1 ArquivoTotal.pdf: 5481354 bytes, checksum: 0c13ae5c154f04c9968451cecffae9ab (MD5) Previous issue date: 2013-03-08<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Until late 1980s, urban air pollution was attributed to industrial emissions. However, the fast urban growth in the developing nations caused the vehicles to become an issue of large magnitude. Nowadays, there is a situation in which the most responsible for the a relevant part of the air quality degradation in the bigger urban c

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Andersson, Gustaf. "Generalised linear factor score regression : a comparison of four methods." Thesis, Uppsala universitet, Statistiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412851.

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Factor score regression has recently received growing interest as an alternative for structural equation modelling. Two issues causing uncertainty for researchers are addressed in this thesis. Firstly, more knowledge is needed on how different approaches to calculating factor score estimates compare when estimating factor score regression models. Secondly, many applications are left without guidance because of the focus on normally distributed outcomes in the literature. This thesis examines how factor scoring methods compare when estimating regression coefficients in generalised linear factor

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Ferreira, Clecio da Silva 1976. "Estimação de maxima verossimilhança penalizada para funções de regressão com erros perpendiculares." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306200.

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Orientadores: Nancy Lopes Garcia, Ronaldo Dias<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-08-03T17:31:36Z (GMT). No. of bitstreams: 1 Ferreira_CleciodaSilva_M.pdf: 1590147 bytes, checksum: b59bae1bcbff4de6c74cd2dea3627187 (MD5) Previous issue date: 2003<br>Mestrado<br>Mestre em Estatística

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Stevens, Logan Kain. "Future Lyme Disease Risk in the Southeastern United States Based on Projected Land Cover." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83797.

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Lyme disease is the most significant vector-borne disease in the United States. Its southward advance over the last several decades has been quantified, and previous research has examined the potential role of climate change on the disease's expansion, but no research has considered the role of future land cover patterns upon its distribution. This research examines Lyme disease risk in the southeastern United States based on estimated land cover projections under four different Intergovernmental Panel on Climate Change Special Report Emissions Scenarios (IPCC-SRES) A1B, A2, B1, and B2. Result

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Olsen, Andrew Nolan. "Hierarchical Bayesian Methods for Evaluation of Traffic Project Efficacy." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2922.

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A main objective of Departments of Transportation is to improve the safety of the roadways over which they have jurisdiction. Safety projects, such as cable barriers and raised medians, are utilized to reduce both crash frequency and crash severity. The efficacy of these projects must be evaluated in order to use resources in the best way possible. Five models are proposed for the evaluation of traffic projects: (1) a Bayesian Poisson regression model; (2) a hierarchical Poisson regression model building on model (1) by adding hyperpriors; (3) a similar model correcting for overdispersion; (4)

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Noreika, Marius. "Mirtingumo nuo galvos smegenų insulto prognozavimo modeliai ir programinės priemonės." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2007. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_143821-99512.

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Mirtingumo nuo įvairių ligų įvertinimas ir prognozavimas pagal atlikto tyrimo duomenis – dažnas statistinės analizės uždavinys medicinoje. Juose siekiama prognozuoti tikėtiną mirčių nuo tiriamos ligos skaičių, susirgimo tam tikra liga tikimybę ar išskirti rizikos grupes, įvertinant tyrimo metu surinktų stebimos populiacijos imties kintamųjų duomenis ir nustatant, kokia priklausomybę juos sieja. Pagrindiniai šio darbo tikslai: susipažinti su statistikos metodais, taikomais mirtingumo duomenų analizei; sudaryti statistinės analizės modelius turimiems mirtingumo duomenims; realizuoti sudarytus mo

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Massiot, Gaspar. "Quelques Problèmes de Statistique autour des processus de Poisson." Thesis, Rennes, École normale supérieure, 2017. http://www.theses.fr/2017ENSR0006/document.

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L’objectif principal de cette thèse est de développer des méthodologies statistiques adaptées au traitement de données issues de processus stochastiques et plus précisément de processus de Cox.Les problématiques étudiées dans cette thèse sont issues des trois domaines statistiques suivants : les tests non paramétriques, l’estimation non paramétrique à noyaux et l’estimation minimax.Dans un premier temps, nous proposons, dans un cadre fonctionnel, des statistiques de test pour détecter la nature Poissonienne d’un processus de Cox.Nous étudions ensuite le problème de l’estimation minimax de la r

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Kontosh, Larry G. "Transferable skill analysis : utilization, methods, and perceived self-efficacy by rehabilitation professionals, using poison regression analysis of count data /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488195633519476.

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Geedipally, Srinivas. "Analysis of traffic accidents before and after resurfacing." Thesis, Linköping University, Department of Science and Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-3642.

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<p>This Dissertation includes a statistical analysis of traffic accidents followed by a test to know the effect of new pavement on traffic safety. The accident data is considered for the roads those are in Region South-East Sweden that got new pavement during the year 2001. In Sweden, this is the fourth study concerning the before and after effect of the new pavement. Johansson (1997) studied the change in the number of accidents between the before-years and after-years. Tholén (1999) and Velin et al (2002) have additionally compared the change with the change in the number of accidents in a r

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Häggström, Lundevaller Erling. "Tests of random effects in linear and non-linear models." Doctoral thesis, Umeå universitet, Statistik, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-15.

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Sjöström, Lars. "The spatial distribution of birds in southern Sweden : A descriptive study of willow warbler, nightingale, blackbird, robin and grey flycatcher in Svealand and Götaland." Thesis, Uppsala universitet, Statistiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-275343.

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This is a thesis about the spatial distribution of willow warbler, nightingale, blackbird, robin and grey flycatcher in Svealand and Götaland, that is the southern third of Sweden. It explores the possibilities of using statistics to describe the distribution and variation of birds in a given region.The data was collected by observation of birds on sites called standard routes, with 25 kilometres between them. The standard routes are the points in a grid net placed upon the map of Sweden. The purpose of standard routes is to represent the birds in Sweden both geographic and biotopological.The

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Chiacchierini, Lisa M. "Experimental design issues in impaired reproduction applications." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-06062008-151533/.

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