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Dissertations / Theses on the topic 'Segmentation multivariée'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Asseraf, Mounir. "Extension et optimisation pour la segmentation de la distance de Kolmogorov-Smirnov." Paris 9, 1998. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1998PA090026.

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La segmentation est une méthode qui entre dans le cadre de l'analyse des données multidimensionnelles ; elle se distingue des autres méthodes lorsqu'on passe à la phase descriptive des résultats, telle que la lisibilité des règles de décision. La segmentation peut être vue, d'une part, comme une méthode exploratoire et descriptive permettant de résumer et structurer, sous la forme d'un arbre binaire, un ensemble d'observations multidimensionnelles. D'autre part, comme un outil décisionnel et inférentiel visant à produire une règle de classement sur les objets appartenant à une partition connue

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Ghandi, Sanaa. "Analysis of network delay measurements : Data mining methods for completion and segmentation." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2023. http://www.theses.fr/2023IMTA0382.

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La croissance exponentielle d'Internet nécessite une supervision régulière des métriques réseau. Cette thèse se concentre sur les délais aller-retour et la possibilité de résoudre les problèmes de données manquantes et de segmentation multivariée. La première contribution comprend l'orchestration de campagnes de mesure des délais, ainsi que le développement d'un simulateur qui génère des traces de délais de bout en bout. La deuxième contribution de cette thèse est l’introduction de deux méthodes de complétion de données manquantes. La première méthode repose sur la factorisation de matrices no

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3

Rzadca, Mark C. "Multivariate granulometry and its application to texture segmentation /." Online version of thesis, 1994. http://hdl.handle.net/1850/12200.

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4

Templeton, William James. "Consumer interests as market segmentation variables." Thesis, London Business School (University of London), 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312926.

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5

Rye, Morten Beck. "Image segmentation and multivariate analysis in two-dimensional gel electrophoresis." Doctoral thesis, Norwegian University of Science and Technology, Department of Chemistry, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1744.

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<p>The topic of this thesis is data-analysis on images from two-dimensional electrophoretic gels. Because of the complexity of these images, there are numerous steps and approaches to such an analysis, and no “golden standard” has yet been established on how to produce the desired output. In this thesis focus is put on two essential fields concerning 2D-gel analysis; registration of images by segregation and protein spot identification, and data-analysis on the output of such a registration by multivariate methods. Image segmentation is mainly concerned with the task of identifying individual

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6

Lu, Jiang. "Transforms for multivariate classification and application in tissue image segmentation /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3052195.

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7

Hosseini-Chaleshtari, Jamshid. "Segment Congruence Analysis: An Information Theoretic Approach." PDXScholar, 1987. https://pdxscholar.library.pdx.edu/open_access_etds/797.

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When there are several possible segmentation variables, marketers must investigate the ramifications of their potential interactions. These include their mutual association, the identification of the best (the distinguished) segmentation variable and its predictability by a set of descriptor variables, and the structure of the multivariate system(s) obtained from the segmentation and descriptor variables. This procedure has been defined as segment congruence analysis (SCA). This study utilizes the information theoretic and the log-linear/logit approaches to address a variety of research questi

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On, Vu Ngoc Minh. "A new minimum barrier distance for multivariate images with applications to salient object detection, shortest path finding, and segmentation." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS454.

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Les représentations hiérarchiques d’images sont largement utilisées dans le traitement d’images pour modéliser le contenu d’une image par un arbre. Une hiérarchie bien connue est l’arbre des formes (AdF) qui encode la relation d’inclusion entre les composants connectés à partir de différents niveaux de seuil. Ce genre d’arbre est auto-duale et invariant de changement de contraste, ce qu’il est utilisé dans de nombreuses applications de vision par ordinateur. En raison de ses propriétés, dans cette thèse, nous utilisons cette représentation pour calculer la nouvelle distance qui appartient au d

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9

Liggett, Rachel Esther. "Multivariate Approaches for Relating Consumer Preference to Sensory Characteristics." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1282868174.

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10

Johansson, David. "Automatic Device Segmentation for Conversion Optimization : A Forecasting Approach to Device Clustering Based on Multivariate Time Series Data from the Food and Beverage Industry." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81476.

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This thesis investigates a forecasting approach to clustering device behavior based on multivariate time series data. Identifying an equitable selection to use in conversion optimization testing is a difficult task. As devices are able to collect larger amounts of data about their behavior it becomes increasingly difficult to utilize manual selection of segments in traditional conversion optimization systems. Forecasting the segments can be done automatically to reduce the time spent on testing while increasing the test accuracy and relevance. The thesis evaluates the results of utilizing mult

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11

Motta, Sergio Luis Stirbolov. "Estudo sobre segmentação de mercado consumidor por atitude e atributos ecológicos de produtos." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/12/12139/tde-30062009-161308/.

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Este estudo pretendeu verificar se a combinação das variáveis atitude e atributos ecologicamente corretos de bens de consumo pode ser utilizada como base para a segmentação de mercado. Para satisfazer a essa proposição, buscou-se, primeiramente, o domínio da teoria disponível sobre os temas a ela relacionados, que serviu de base à pesquisa de campo. Esta teve um caráter quantitativo e foi do tipo descritivo, com método do estudo de campo; utilizou uma amostra não-probabilística por conveniência de estudantes e professores de uma universidade da cidade de São Paulo-SP, que expressaram suas opin

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12

Lung-Yut-Fong, Alexandre. "Détection de ruptures pour les signaux multidimensionnels. Application à la détection d'anomalies dans les réseaux." Phd thesis, Télécom ParisTech, 2011. http://pastel.archives-ouvertes.fr/pastel-00675543.

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L'objectif de cette thèse est de proposer des méthodes non-paramétriques de détection rétrospective de ruptures. L'application principale de cette étude est la détection d'attaques dans les réseaux informatiques à partir de données recueillies par plusieurs sondes disséminées dans le réseau. Nous proposons dans un premier temps une méthode en trois étapes de détection décentralisée d'anomalies faisant coopérer des sondes n'ayant accès qu'à une partie du trafic réseau. Un des avantages de cette approche est la possibilité de traiter un flux massif de données, ce qui est permis par une étape de

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13

Rosa, Marlise. "SEGMENTAÇÃO DE GRÃOS DE HEMATITA EM AMOSTRAS DE MINÉRIO DE FERRO POR ANÁLISE DE IMAGENS DE LUZ POLARIZADA." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/8064.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The aim of the present work is to classify co-registered pixels of stacks of polarized light images of iron ore into their respective crystalline grains or pores, thus producing grain segmented images that can be analyzed by their size, shape and orientation distributions, as well as their porosity and the size and morphology of the pores. Polished sections of samples of hematite-rich ore are digitally imaged in a rotating polarizer microscope at varying planepolarization angles. An image stack is produced for every field of view,

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14

Costa, Wilian França. "Segmentação multiresolução variográfica ótima." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-15122016-082121/.

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O desenvolvimento de soluções que auxiliem na extração de informações de dados oriundos de sistemas de sensoriamento remoto e outras geotecnologias são essenciais em diversas atividades, por exemplo, a identificação de requisitos para o monitoramento ambiental; a definição de regiões de conservação; o planejamento e execução de atividades de verificação quanto ao cumprimento e uso do espaço; o gerenciamento de recursos naturais; a definição de áreas protegidas e ecossistemas; e o planejamento para aplicação e reposição de insumos agrícolas. Neste contexto, o presente trabalho apresenta um méto

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15

Barrera, Núñez Víctor Augusto. "Automatic diagnosis of voltage disturbances in power distribution networks." Doctoral thesis, Universitat de Girona, 2012. http://hdl.handle.net/10803/80944.

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This thesis proposes a framework for identifying the root-cause of a voltage disturbance, as well as, its source location (upstream/downstream) from the monitoring place. The framework works with three-phase voltage and current waveforms collected in radial distribution networks without distributed generation. Real-world and synthetic waveforms are used to test it. The framework involves features that are conceived based on electrical principles, and assuming some hypothesis on the analyzed phenomena. Features considered are based on waveforms and timestamp information. Multivariate analysis o

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16

Saker, Halima. "Segmentation of Heterogeneous Multivariate Genome Annotation Data." 2021. https://ul.qucosa.de/id/qucosa%3A75914.

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Due to the potential impact of next-generation sequencing NGS, we have seen a rapid increase in genomic information and annotation information that can be naturally mapped to genomic locations. In cancer research, for example, there are significant efforts to chart DNA methylation at single-nucleotide resolution. The NIH Roadmap Epigenomics Projects, on the other hand, has set out to chart a large number of different histone modifications. However, throughout the last few years, a very diverse set of aspects has become the aim of large-scale experiments with a genome-wide readout. Therefore,

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17

Ungerer, Leona M. "Values as multivariate consumer market segmentation discriminators : a subjective well-being approach." Thesis, 2009. http://hdl.handle.net/10500/3188.

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The Living Standards Measure (LSM), a South African marketing segmentation method, is a wealth measure based on standard of living. This research study investigates whether a rationale can be found for the inclusion of value-related variables in this type of multivariate segmentation approach. Schwartz’s (1992; 2006) values model was used to operationalise personal values and individual-level culture – focusing on two of its dimensions, ideocentrism and allocentrism. The current positive psychology research trend manifests in the inclusion of subjective wellbeing (SWB), as measured by s

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18

Amornnikun, Patipharn, and Patipharn Amornnikun. "Metaheuristic-Based Possibilistic Multivariate Fuzzy Weighted C-Means Algorithms for Market Segmentation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/swmwcm.

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19

Hsiu-Wen, Liu. "Hierarchical Bayes Conjoint Analysis with Multivariate Mixture of Normal Heterogeneity: Implications for Market Segmentation." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2304200709150500.

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20

Liu, Hsiu-Wen, and 劉秀雯. "Hierarchical Bayes Conjoint Analysis with Multivariate Mixture of Normal Heterogeneity: Implications for Market Segmentation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/47042305067659434744.

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博士<br>國立臺灣大學<br>國際企業學研究所<br>95<br>Conjoint analysis, designed to estimate individual preference and the relative competition among brands, has become one of the most widely-used quantitative methods in Marketing Research. In addition, hierarchical Bayes inference is one of the most favored approaches because of its superior in recovering individual part-worths. However, current application of hierarchical Bayes model is not without drawbacks, because consumer heterogeneity is assumed to follow a multivariate normal distribution. The normal distribution has its own characteristic such as uni

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21

胡承民. "Market Segmentation through Self-Organizing Map and Multivariate Cluster Analysis - A Case Study of 3C Stores." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/20087587313118252913.

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碩士<br>義守大學<br>管理科學研究所<br>86<br>Market segmentaiton, which is the foundation of selecting marketing strategies, is an indispensable procedure in analyzing market structure. Thus, market segmentation is one of the most important findings in marketing. The conventional research usually employed the "cluster analysis" approaches, which are statistics oriented. Recently, due to its high performance in engineering, artificial neural networks are also applied in management. However, most of these researches use the supervised networks instead of unsupervised networks. Hence, this study dedicates to

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