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Tesi sul tema "BOX-COX"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 26 luglio 2025

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1

Almohaimeed, Amani Mohammed. "Box-Cox-type transformations for linear and logistic models with random effects." Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12831/.

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Random effect models have become a mainstream statistical technique over the last decades; and the same can be said for response transformation models such as the Box-Cox transformation. The latter ensures that the assumptions of normality and of homoscedasticity of the response distribution are fulfilled, which are essential conditions for the use of a linear model or a linear mixed model. However, methodology for response transformation and simultaneous inclusion of random effects has been developed and implemented only scarcely, and is so far restricted to Gaussian random effects. The first

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2

Reis, Cássio Pinho dos. "Delineamentos ótimos visando a possibilidade de transformação na variável resposta." Botucatu, 2019. http://hdl.handle.net/11449/181371.

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Orientador: Luzia Aparecida Trinca<br>Resumo: Nas mais diversas áreas do conhecimento se procura aumentar a eficiência dos delineamentos experimentais, principalmente, para minimizar os custos das pesquisas. O uso dos delineamentos ótimos, com seus diferentes critérios de otimização, é fundamental para se obter resultados que maximizam a informação em estudos experimentais. A maioria dos métodos pressupõe homogeneidade de variâncias, a qual nem sempre é veri cada no conjunto de dados. O objetivo deste trabalho é desenvolver uma metodologia para construção de delineamentos ótimos exatos e cient

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3

Samaniego, Juana Rosa Lindo. "Abordagem clássica e bayesiana em modelos auto-regressivos com transformações de Box & Cox." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-18062015-110335/.

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Atualmente as projeções de demanda e ganho tornam-se variáveis importantes no processo de tomada de decisões para investimentos envolvendo custo e capital, em pesquisa de mercado envolvendo produtos de consumo, em pesquisa de populações e em qualquer outro tipo de previsões que tenham a ver com ganhos ou demandas futuras, por exemplo o volume de água que é preciso para ser gerada determinada quantidade de energia consumido por uma população através de um sistema de operação e planejamento de um sistema hidroelétrico, etc. Em resposta desse interesse muitos estudos examinaram a possibilidade de

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4

Luo, Yabing. "A Correlation-Based Method to Detect Weak Dependence." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2479.

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The focus of this thesis is an investigation of ways to detect weak dependence between two random variables X and Y. Our approach is to design tests for correlation rather than testing for dependence directly, since X and Y are not independent if they are not uncorrelated. We examined the magnified Pearson correlation after the Box-Cox transformation to determine whether X and Y are dependent. The results indicated that our approach not only has the potential to detect and evaluate the weak dependence cases that have previously been intractable, but also is conceptually simple and easy to impl

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5

Couto, Mara Rubia Machado. "Transformação de dados com excesso de zero em experimentos com culturas olerícolas." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/4982.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>In olericulture, the highest interest is aimed at the production of commercial fruits. These experiments usually evaluate variables such as phytomass and number of fruits. However, these variables present a peculiar characteristic related to their presence or absence at the moment of harvesting. This attribute is represented by the occurrence of zero values for these variables, generating some variability and affecting the data variation analysis. In this study, experiments with summer squash, sweet pepper and broccoli were analy

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6

Zhou, Yahong. "Estimation of transformation models, generalized bivariate probit models, and box-cox partially linear models : three essays in microeconomics /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ECON%202005%20ZHOU.

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7

Miranda, Gislane Natália de Souza. "Transformação de box-cox e escores de blom para correção da heterogeneidade de variâncias do peso de bovinos." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/4068.

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Made available in DSpace on 2015-03-26T13:32:19Z (GMT). No. of bitstreams: 1 texto completo.pdf: 508483 bytes, checksum: ed19e15dac174ba29cb7068c7f83a289 (MD5) Previous issue date: 2013-04-26<br>The objective of this work was to verify the efficiency of Box-Cox and Blom scores transformations in correcting the phenotypic heterogeneity of variance adjusted weights of cattle Tabapuã the Brazilian Northeast to the factors producing regions, ages and sex. We used data Tabapuã the Brazilian Northeast, collected from 1970, from the control of weight development Brazilian Association of Zebu Breede

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8

Volfson, Alexander. "Exploring the optimal Transformation for Volatility." Digital WPI, 2010. https://digitalcommons.wpi.edu/etd-theses/472.

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This paper explores the fit of a stochastic volatility model, in which the Box-Cox transformation of the squared volatility follows an autoregressive Gaussian distribution, to the continuously compounded daily returns of the Australian stock index. Estimation was difficult, and over-fitting likely, because more variables are present than data. We developed a revised model that held a couple of these variables fixed and then, further, a model which reduced the number of variables significantly by grouping trading days. A Metropolis-Hastings algorithm was used to simulate the joint density and d

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9

Vidová, Katarína. "Statistické vlastnosti regulačních diagramů a modelů způsobilosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417799.

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The diploma thesis is focused on process stability and capability assessment. It describes certain types of control charts, basic capability indices as well as Box-Cox transformation. The practical part of the study is concerned with applying control charts on generated data and consequently on real data. By this, it focuses on comparing various methods of estimating sample standard deviation and on the impact of non-compliance with the assumption of normal distribution of process variable on process stability and capability assessment.

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Modesto, Lidiane de Almeida. "A demanda por moeda no Brasil no período 1974-2008: estimativas sob expectativas adaptativas e racionais." Universidade do Estado do Rio de Janeiro, 2010. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3345.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O objetivo principal desta dissertação é analisar a demanda por moeda no Brasil no período 1974 a 2008, lembrando que ele inclui sub-períodos de inflação elevada, e baixa, e levando em conta hipóteses alternativas quanto à formação de expectativas. A especificação adotada é a de Tourinho (1995), que generaliza a de Cagan (1956) para permitir uma forma funcional mais flexível e incorporar outras variáveis, além da inflação esperada, como variáveis explicativas. Verifica-se que estas extensões são importantes para modelar a demanda p

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11

Ramesh, Chirania Saloni. "Forecasting Model for High-Speed Rail in the United States." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76878.

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A tool to model both current rail and future high-speed rail (HSR) corridors has been presented in this work. The model is designed as an addition to the existing TSAM (Transportation System Analysis Model) capabilities of modeling commercial airline and automobile demand. TSAM is a nationwide county to county multimodal demand forecasting tool based on the classical four step process. A variation of the Box-Cox logit model is proposed to best capture the characteristic behavior of rail demand in US. The utility equation uses travel time and travel cost as the decision variables for each model

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12

Milani, Eder Angelo. "Modelos para séries temporais utilizando as distribuições normal generalizada e log-normal generalizada." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/7943.

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Submitted by Izabel Franco (izabel-franco@ufscar.br) on 2016-10-06T18:14:46Z No. of bitstreams: 1 TeseEAMms.pdf: 1490434 bytes, checksum: e7a807666b453630ffb423774d2539b9 (MD5)<br>Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-20T13:51:46Z (GMT) No. of bitstreams: 1 TeseEAMms.pdf: 1490434 bytes, checksum: e7a807666b453630ffb423774d2539b9 (MD5)<br>Approved for entry into archive by Marina Freitas (marinapf@ufscar.br) on 2016-10-20T13:51:52Z (GMT) No. of bitstreams: 1 TeseEAMms.pdf: 1490434 bytes, checksum: e7a807666b453630ffb423774d2539b9 (MD5)<br>Made ava

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Housková, Markéta. "Užití transformací v regresní analýze." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193579.

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This Thesis deals with the using of transformations in model of regression analysis. The first part of the Thesis summarizes the theoretical findings of the regression models, assumption of these models and the possibility of using different types of transformations in the event non-compliance of regression models. The practical part of this Thesis deals with regression analysis of real dataset on school readiness of children from the district of Kolín in 2013 and using transformations in the selected regression model.

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SANTOS, Carlos Sérgio Araújo dos. "Modelos simétricos transformados não lineares com aplicação na estimativa volumétrica em híbrido de Eucalyptus tereticornis no Pólo Gesseiro do Araripe-PE." Universidade Federal Rural de Pernambuco, 2010. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/4534.

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Submitted by (ana.araujo@ufrpe.br) on 2016-05-25T15:49:21Z No. of bitstreams: 1 Carlos Sergio Araujo dos Santos.pdf: 1655656 bytes, checksum: 7687ae013a71aadd4e9e9bf4783a172f (MD5)<br>Made available in DSpace on 2016-05-25T15:49:21Z (GMT). No. of bitstreams: 1 Carlos Sergio Araujo dos Santos.pdf: 1655656 bytes, checksum: 7687ae013a71aadd4e9e9bf4783a172f (MD5) Previous issue date: 2010-01-15<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Box and Cox (1964) developed a numerical procedure to transform the response variable such that the transformed

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15

Vandyke, Alex J. "Development of a High-Speed Rail Model to Study Current and Future High-Speed Rail Corridors in the United States." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76794.

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A model that can be used to analyze both current and future high-speed rail corridors is presented in this work. This model has been integrated into the Transportation Systems Analysis Model (TSAM). The TSAM is a model used to predict travel demand between any two locations in the United States, at the county level. The purpose of this work is to develop tools that will create the necessary input data for TSAM, and to update the model to incorporate passenger rail as a viable mode of transportation. This work develops a train dynamics model that can be used to calculate the travel time and en

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SILVA, Ana Hermínia Andrade e. "Testes escore para transformação de dados em regressões lineares." Universidade Federal de Pernambuco, 2013. https://repositorio.ufpe.br/handle/123456789/12100.

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Submitted by Etelvina Domingos (etelvina.domingos@ufpe.br) on 2015-03-11T19:57:26Z No. of bitstreams: 2 DISSERTAÇÃO FINAL - ANA HERMÍNIA ANDRADE E SILVA.pdf: 1054336 bytes, checksum: dfad5f2edf1897887b395ecc13dd7196 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5)<br>Made available in DSpace on 2015-03-11T19:57:26Z (GMT). No. of bitstreams: 2 DISSERTAÇÃO FINAL - ANA HERMÍNIA ANDRADE E SILVA.pdf: 1054336 bytes, checksum: dfad5f2edf1897887b395ecc13dd7196 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 201

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Toebe, Marcos. "Não-normalidade multivariada e multicolinearidade em análise de trilha na cultura de milho." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5057.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The path analysis allows evaluation of the direct and indirect effects of the explicative variables on variable of interest, through the breakdown of the correlation coefficients. In order to make the results obtained through the path analysis reliable, some assumptions must be met. Thus, the objectives of this study were to verify the normality and the multicollinearity interference in the corn path analysis and compare alternative methods for estimating the path coefficients. Data from 44 trials of corn cultivars was used, carr

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18

Ivan, Jean-Paul. "Principal Component Modelling of Fuel Consumption ofSeagoing Vessels and Optimising Fuel Consumption as a Mixed-Integer Problem." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-51847.

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The fuel consumption of a seagoing vessel is, through a combination of Box-Cox transforms and principal component analysis, reduced to a univariatefunction of the primary principle component with mean model error −3.2%and error standard deviation 10.3%. In the process, a Latin-hypercube-inspired space partitioning sampling technique is developed and successfully used to produce a representative sampleused in determining the regression coefficients. Finally, a formal optimisation problem for minimising the fuel use is described. The problem is derived from a parametrised expression for the fuel

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19

Acinan, Sezen. "Determination Of Runoff Coefficient Of Basins By Using Geographic Information Systems." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609522/index.pdf.

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Turkey has very different geomorphologic, hydrologic and climatic conditions, so the runoff coefficient should be different from one basin to another. But only one constant value, which is 0.37, is being used for all the basins in Turkey. In this thesis, monthly, seasonal and annual runoff coefficients of 48 sub-basins in western and southern part of Anatolia are determined by using synchronous and average rainfall, runoff data of 26 year record period. Their temporal and spatial distributions are investigated. The relationship between the basin parameters and the runoff coefficient are also e

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20

Sousa, Tanara Rosângela Vieira. "Ensaios em economia da saúde : o risco e o valor de uma vida estatística no caso dos acidentes de trânsito na cidade de Porto Alegre." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/25785.

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Nesta tese são desenvolvidos três estudos sobre o risco associado aos acidentes de trânsito, com o objetivo de avaliar como a população o percebe, e o valor que estaria disposta a pagar para reduzi-lo. As análises foram feitas com duas diferentes metodologias econométricas e dois diferentes conjuntos de dados da população de Porto Alegre. O primeiro estudo procurou avaliar que fatores de risco contribuem para aumentar a gravidade dos acidentes de trânsito, utilizando dados de acidentes de trânsito ocorridos na cidade de Porto Alegre no período 2000-2008, através de modelos logit ordenados gene

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Putzulu, Matteo. "Modelli ARIMA implementati in ambiente Python applicati a serie temporali GNSS." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25884/.

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Nella presente tesi, si è discusso sul corretto trattamento dei dati di posizione, provenienti da una stazione permanente GPS in PPP, per studiarne l’andamento e successivamente elaborarne le previsioni per il futuro. E' stato utlizzato un approccio con la classe del Modelli ARIMA implementati su linguaggio Python.

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Cissé, Ismaëlh Ahmed. "Trafic aérien de passagers au Canada : une analyse exploratoire du modèle origine-destination de Transports Canada pour le marché intérieur." Master's thesis, Université Laval, 2013. http://hdl.handle.net/20.500.11794/25411.

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Le dynamisme du secteur aérien canadien amène Transports Canada à réviser régulièrement ses techniques de modélisation du trafic de passagers afin d’améliorer la performance prédictive de ses modèles. Ce travail explore différentes versions d’un modèle PODM (Passanger Origin-Destination Model) que Transports Canada utilise pour prévoir le trafic de passagers entre une origine et une destination à l’intérieur du Canada avec des données de panel (i.e. longitudinales et transversales). Deux formes paramétriques (log-linéaire et Box-Cox) sont estimées dans leurs versions empilées, avec des effets

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23

Chang, Chai-Hao, and 張家豪. "Diagnostics of Box-Cox Normality Transformation." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/31042713790613437703.

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碩士<br>國立成功大學<br>統計學系碩博士班<br>93<br>The main use of Box-Cox transformation is to transformation data to be approximately normal distributed. While one or a few cases can greatly influence the estimation of transformation coefficient lambda. To detect influential cases, several methods have been suggested. So far, diagnostics for the transformation coefficient lambda is mainly on univariate data and regression problem.With current computing capability, we can replace complicated derivation by fast computing program,which allow us to extend the methodology to multiivariate cases. Among these, gra

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24

Chen, Hanfeng. "Efficiency of tests following box-cox transformations." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23288498.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1990.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 77-80).

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Wu, Chao-Chi, and 吳兆奇. "On Fisher’s Linear Discriminant Analysis:A Box-Cox Transformation Approach." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95039442713614027899.

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碩士<br>輔仁大學<br>應用統計學研究所<br>98<br>Discriminant analysis has been widely used in a variety of areas, such as medicine, finance and quality control, etc. Based on Fisher’s linear discriminant analysis(FLDA), this study is restricted in discussion of the discriminant analysis while the number of population is two. To improve the FLDA, this study proposes to use the Box-Cox transformation to transform the data and constructs “a family of discriminant functions” and “a family of discriminant rules”. When all the values of power transformation are equal to 1, the proposed approach becomes the FLDA.Und

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Yang, Hung-Chih, and 楊宏智. "Research on Back-Propagation Neural Networks with Box-Cox Transformation." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/02523279814407794637.

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碩士<br>立德管理學院<br>應用資訊研究所<br>92<br>The Artificial Neural Network (ANN) has developed for many years. The type of model and its architecture is gradually substantial. It has a widespread application, like as pattern recognition, cluster analysis, forecasting, etc. The ANN applied to forecasting has been approved by many specialists and scholars from many fields of science. Among the supervised networks, the Back Propagation Network (BPN) model is the most popular and it is the basis for model improvement in this study. The characteristic of the BPN model is powerful on operation ability and easy

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Lin, Yu-Shan, and 林于善. "On Sweeting's Prior Distribution for the Box-Cox Transformed Linear Model." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/16365903340373499863.

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碩士<br>國立交通大學<br>統計所<br>91<br>For the analysis of observations in the linear model with Box-Cox transformation, via Bayesian approaches, some different priors have been proposed. In this thesis, we will compare relative merits of different priors including the prior proposed by Sweeting using MCMC methods. Some numerical results with a set of real data and simulation are given.

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Qu, Peng. "Application of Box-Cox transformations to discrimination for the Two-Class problem." 1994. http://catalog.hathitrust.org/api/volumes/oclc/32526953.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1994.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 80-83).

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Wang, Wan-Lun, and 王婉倫. "Exponential Inference Models for Progressive Step-Stress Life Testing with Box-Cox Transformation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/13495859659147833282.

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碩士<br>國立中央大學<br>統計研究所<br>95<br>In order to quickly extract information on the life of a product, accelerated life-tests are usually employed. In this thesis, we discuss a k-stage step-stress accelerated life-test with M stress variables when the underlying data are progressively Type-I group censored. The life-testing model assumed is an exponential distribution with a link function that relates the failure rate and the stress variables in a linear way under the Box-Cox transformation, and a cumulative exposure model for modelling the effect of stress changes. The classical maximum likelihood

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AGRAWAL, ANAMIKA. "CROSS PROJECT DEFECT PREDICTION." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16345.

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Cross-project defect prediction (CPDP) recently gained considerable attention. Many studies have provided the success of cross-project defect prediction (CPDP) to predict defects. But, most of the datasets share the same limitations: as the metrics (independent variable) hardly follow a normal distribution. They are mostly skewed data. Hence, these metrics has to be transformed before the training and predicting the defect. Various transformations have been studied in the area of cross-project defect prediction like rank transformation, log transformation and Box-Cox transformation. The yeojoh

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"A theoretical and empirical investigation of the Box-Cox model and a nonlinear least squares alternative." Sloan School of Management, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/2314.

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OU, LI-ZHONG, and 歐立中. "Studies on Box-Cox power transformation and its application on the analysis of monthly streamflow series." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/98801691202093051101.

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Aman, Beshir M. "Reservoir History Matching Using Ensemble Kalman Filters with Anamorphosis Transforms." Thesis, 2012. http://hdl.handle.net/10754/255452.

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This work aims to enhance the Ensemble Kalman Filter performance by transforming the non-Gaussian state variables into Gaussian variables to be a step closer to optimality. This is done by using univariate and multivariate Box-Cox transformation. Some History matching methods such as Kalman filter, particle filter and the ensemble Kalman filter are reviewed and applied to a test case in the reservoir application. The key idea is to apply the transformation before the update step and then transform back after applying the Kalman correction. In general, the results of the multivariate method was

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FARAHMAND, P. "Estimation de la demande de gaz naturel dans les principaux groupes d'industries manufacturieres au canada: une approche par box-cox." Thèse, 1987. http://hdl.handle.net/1866/1114.

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Azevedo, Filipe Charters de. "Metodologias de pricing aplicadas ao ramo dos seguros não vida : uma análise baseada na estatística experimental, análise de risco e Value Based Pricing." Master's thesis, 2015. http://hdl.handle.net/10400.2/4570.

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Uma companhia de seguros baseia o seu modelo de produção no valor de uma matéria-prima cujo custo é desconhecido no momento de produção. De uma forma mais directa: uma companhia “compra” sinistros e “vende” segurança – se uma companhia compra os sinistros a um baixo preço então ganha dinheiro; se compra “caro” então perde dinheiro. Na cadeia de valor, uma companhia pode contar com a lei dos grandes números que mitiga a volatilidade e a incerteza de mercado – confere segurança na média. Pretende-se, com este projecto, fornecer uma base de trabalho geral para desenhar os preços de seguros não-v

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Hsu, Sheng-hung, та 徐聖閎. "具Box-Cox轉換之累進型I設限逐步加速指數壽命實驗的可靠度分析". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/9z457q.

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碩士<br>國立中央大學<br>統計研究所<br>97<br>Accelerated life testing puts the product in the environment which is worse than in normal condition, in order to collect the information of product rapidly, and to use this information to predict the lifetime of product under normal condition. In this thesis, we discuss a k-stage progressive type I censoring step-stress accelerated life testing with single stress variable, when the lifetime of product is of exponential distribution and there is a linear relationship between the lifetime of product and the stress variable under Box-Cox transformation. The maximum

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37

Zhang, Chuan Chuan. "The Double Pareto-Lognormal Distribution and its applications in actuarial science and finance." Thèse, 2015. http://hdl.handle.net/1866/12005.

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Le but de ce mémoire de maîtrise est de décrire les propriétés de la loi double Pareto-lognormale, de montrer comment on peut introduire des variables explicatives dans le modèle et de présenter son large potentiel d'applications dans le domaine de la science actuarielle et de la finance. Tout d'abord, nous donnons la définition de la loi double Pareto-lognormale et présentons certaines de ses propriétés basées sur les travaux de Reed et Jorgensen (2004). Les paramètres peuvent être estimés en utilisant la méthode des moments ou le maximum de vraisemblance. Ensuite, nous ajoutons une variab

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