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Dissertations / Theses on the topic 'Multivariate pattern analyses'

Author: Grafiati

Published: 10 December 2022

Last updated: 19 July 2025

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1

Wang, Qi. "Multivariate group analyses for functional neuroimaging : conceptual and experimental advances." Thesis, Ecole centrale de Marseille, 2020. http://www.theses.fr/2020ECDM0002.

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Dans les expériences de neuroimagerie fonctionnelle, les participants effectuent un ensemble de tâches pendant que leur activité cérébrale est enregistrée, par exemple en utilisant l’électroencéphalographie (EEG), la magnétoencéphalographie (MEG) ou l'imagerie par résonance magnétique fonctionnelle (fMRI). L'analyse des données d'un groupe de participants, souvent appelée analyse de groupe, vise à identifier des invariants de population qui se rapportent aux tâches accomplies par les participants. Ceci permet de comprendre l'organisation fonctionnelle du cerveau chez les sujets sains et ses dy

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2

Bauman, David. "Analyses spatialement explicites des mécanismes de structuration des communautés d'arbres." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/276814.

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La compréhension des processus écologiques qui sous-tendent l’assemblage des communautés végétales et la coexistence des espèces est un objectif central en écologie. Ces processus sont potentiellement nombreux et de natures contrastées. Ainsi, la composition d’une communauté de plantes dépend de processus déterministes liés aux conditions environnementales abiotiques (climat, conditions physiques et chimiques du sol, lumière) et d’interactions biotiques complexes, positives (facilitation, symbioses) comme négatives (compétition, prédation, pathogènes). En outre, les communautés sont influencée

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3

Hatem, Iyad. "Hybrid multivariate classification technique and its application in tissue image analysis /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3091929.

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4

Minnen, David. "Unsupervised discovery of activity primitives from multivariate sensor data." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24623.

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Thesis (Ph.D.)--Computing, Georgia Institute of Technology, 2009.<br>Committee Chair: Thad Starner; Committee Member: Aaron Bobick; Committee Member: Bernt Schiele; Committee Member: Charles Isbell; Committee Member: Irfan Essa

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5

Handjaras, Giacomo. "Multivariate analyses of neural patterns in the human brain." Thesis, IMT Alti Studi Lucca, 2019. http://e-theses.imtlucca.it/293/1/Handjaras_phdthesis.pdf.

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In the last two decades, neuroscientists have tried to establish the way in which anatomically connected groups of neurons, despite displaying non synchronized neural activity, can work together according to a specific functional architecture. From a methodological perspective, the analysis of such neural organization requires the possibility to measure and integrate the information extracted from large portions of cortex. To this end, recent methodological advancements have prompted the emergence of a new approach, namely multi-voxel pattern analysis (MVPA). Most recent MVPA has also been bre

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6

Bodle, Eric S. "Multivariate Pattern Recognition of Petroleum-Based Accelerants and Fuels." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1170774468.

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7

Allen, E. "A multivariate analysis of effectiveness in life assurance salesmen." Thesis, University of Wolverhampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374972.

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8

Lloyd, Gavin Rhys. "Chemometrics and Pattern Recoqnition for the Analysis of Multivariate Datasets." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520174.

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9

陳志昌 and Chee-cheong Chan. "Compositional data analysis of voting patterns." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31977236.

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10

Chan, Chee-cheong. "Compositional data analysis of voting patterns." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13787160.

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11

Wibom, Carl. "Multivariate analyses of proteomic and metabolomic patterns in brain tumors." Doctoral thesis, Umeå universitet, Onkologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-25670.

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Glioblastoma multiforme (GBM) is the most common primary brain tumor. Given the current standard of care, the prognosis for patients diagnosed with this disease is still poor. There consequently exists a need to improve current treatments, as well as to develop new ones. Many obstacles however need to be overcome to facilitate this effort and one of these involves the development of improved methods to monitor treatment effects. At present, the effects of treatment are typically assessed by radiological means several months after its initiation, which is unsatisfactory for a fast growing tumor

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12

Ward, Rocky. "Multivariate Analyses of Amphibian and Reptilian Distribution in Texas." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc331167/.

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Presence-absence data for amphibians, chelonians, saurians, ophidians, and the terrestrial and aquatic ecological guilds of reptilians were analyzed using multivariate analyses. Geographically consistant distributional patterns were found for all faunal groupings. The correspondence between analyses of the different taxa and guilds was not perfect, but similarities were found. All analyses agreed on the presence of a distinctive region in east Texas. Most analyses also agreed on the presence of distinctive regions in south Texas, the Trans-Pecos, the Edwards Plateau, and north-west Texas. Ther

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13

Marsh, Michael J. (Michael James) 1969. "Analysis of fermentation spectroscopic data using multivariate statistics and pattern recognition." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/10062.

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14

Sanchetta, Alexandre Cruz 1986. "Reconhecimento e classificação de fáceis geológicas através da análise de componentes independentes." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265514.

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Orientador: Rodrigo de Souza Portugal<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica e Instituto de Geociências<br>Made available in DSpace on 2018-08-17T11:39:01Z (GMT). No. of bitstreams: 1 Sanchetta_AlexandreCruz_M.pdf: 1944469 bytes, checksum: 4ef771f7cb51787e86e285c870e84c53 (MD5) Previous issue date: 2010<br>Resumo: O uso método de análise multivariada ICA (Análise de Componentes Independentes), mais o método K-NN (K-vizinhos mais Próximos) aplicados em dados de poços e em dados sísmicos buscando classificar fácies geológicas e suas car

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15

Rosario, Alexander Alvarez. "Análise estatística multivariada para reconhecimento de padrões em ensaios não destrutivos magnéticos." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-04042011-114941/.

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Neste trabalho se estuda a aplicação de técnicas de estatística multivariada para reconhecimento de padrões em sinais de ensaios não destrutivos (END) magnéticos, baseados no Ruído Magnético de Barkhausen (RMB). O reconhecimento de padrões pode ser feito de forma não supervisionada com a técnica multivariada de Análise de Agrupamentos, conglomerados ou Clusters que definem grupos segundo critérios de similaridade. Já para reconhecimento supervisionado a Análise Discriminante procura classificar amostras novas em grupos conhecidos, a priori, usando para este propósito uma regra de classificação

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16

Shah, Nauman. "Statistical dynamical models of multivariate financial time series." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:428015e6-8a52-404e-9934-0545c80da4e1.

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The last few years have witnessed an exponential increase in the availability and use of financial market data, which is sampled at increasingly high frequencies. Extracting useful information about the dependency structure of a system from these multivariate data streams has numerous practical applications and can aid in improving our understanding of the driving forces in the global financial markets. These large and noisy data sets are highly non-Gaussian in nature and require the use of efficient and accurate interaction measurement approaches for their analysis in a real-time environment.

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17

Assefa, Anteneh. "Tracing and apportioning sources of dioxins using multivariate pattern recognition techniques." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-102877.

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High levels of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in edible fish in the Baltic Sea have raised health concerns in the Baltic region and the rest of Europe. Thus, there are urgent needs to characterize sources in order to formulate effective mitigation strategies. The aim of this thesis is to contribute to a better understanding of past and present sources of PCDD/Fs in the Baltic Sea environment by exploring chemical fingerprints in sediments, air, and biota. The spatial and temporal patterns of PCDD/F distributions in the Baltic Sea during the 20th c

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18

Thibault, Louis. "The role of attention in conscious access mechanisms and their influence on visual representation : evidence from psychophysics and fMRI." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB225/document.

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Un des principaux résultats de l'étude scientifique de la conscience concerne l'existence de deux phases distinctes du traitement visuel. La première est caractérisée par une propagation antérograde de l'activité évoquée par le cortex visuel primaire et n'est pas typiquement associée à une perception consciente. La seconde, en revanche, est souvent citée comme un corrélat neuronal de la conscience, et implique une réactivation du cortex visuel précoce par le cortex parieto-frontal. Cette dichotomie soulève plusieurs questions : premièrement, quelle est l'origine de ce phénomène de feedback, et

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19

Meeson, Alan Charles. "Development and application of a toolbox for multivariate pattern analysis of functional magnetic resonance imaging data." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6468/.

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The combination of functional magnetic resonance imaging (fMRI) and multivariate pattern analysis (MVPA) is a powerful method for investigating brain function, with multiple MVPA methods being applied to the task including Logistic Regression, Support Vector Machines, Neural Networks, and Gaussian Naive Bayes classifiers. Careful review of application of these methods revealed a common process used in most studies; the majority of variations occurring in the implementation choices in key sections such as feature selection or classification algorithms being employed. Thus, it is possible to dev

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20

Borges, Camila Aparecida. "Padrões alimentares praticados por adolescentes: influência de fatores socioeconômicos e relação com o estado nutricional." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/6/6138/tde-29022016-134536/.

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Introdução: A caracterização dos padrões alimentares dos adolescentes permite analisar os efeitos da dieta como um todo sobre a saúde. Objetivos: Identificar na literatura científica as múltiplas soluções adotadas nas técnicas multivariadas para obtenção de padrões alimentares; Analisar a relação entre os principais padrões alimentares praticados por adolescentes brasileiros com o excesso de peso e obesidade e Analisar a influência de fatores socioeconômicos sobre os principais padrões alimentares praticados por um grupo multiétnico de adolescentes. Métodos: Esta tese foi composta de tr

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21

Lopes, Elisama Costa. "Identificação de padrões alimentares em uma população adulta: associação com marcadores de risco cardiometabólicos." Universidade Federal do Tocantins, 2018. http://hdl.handle.net/11612/1051.

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As mudanças sociais, econômicas, demográficas, tecnológicas e culturais que o País enfrentou, em especial a partir da metade do século passado, afetaram diretamente o padrão alimentar, que passou a ser constituído, principalmente, de alimentos de alto teor energético, e pobres em nutrientes, configurando uma alimentação de risco para obesidade e doenças cardiovasculares (DCV). Conhecer o padrão alimentar é algo importante como ponto de partida para estabelecer relações entre alimentação, saúde/doença e intervenções preventivas e/ou terapêuticas. Inicialmente realizou-se uma busca na lite

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22

Zhang, Lin. "PATTERN RECOGNITION METHODS FOR THE ANALYSIS OF INFRARED IMAGING DATA AND MULTIVARIATE CALIBRATION STANDARDIZATION FOR NEAR-INFARED SPECTROSCOPY." Ohio : Ohio University, 2002. http://www.ohiolink.edu/etd/view.cgi?ohiou1013445546.

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23

Tornés, Bes Elisabet. "Distributional patterns of diatom communities in Mediterranean rivers." Doctoral thesis, Universitat de Girona, 2009. http://hdl.handle.net/10803/7875.

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Aquesta tesi tracta la jerarquia i l'heterogeneïtat dels sistemes fluvials que afecten l'estructura de les comunitats bentòniques de diatomees. A nivell regional, es van buscar diferents grups de punts i les seves espècies indicadores, es va estudiar la resposta de les comunitats de diatomees als gradients ambientals, es va avaluar la utilitat de diferents índexs de diatomees i es va buscar el millor sistema de classificació per a condicions de referència. A nivell de conca, es volien definir els factors que determinen la distribució longitudinal de la diversitat de les comunitats de diatomees

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24

Nüßgen, Ines [Verfasser], and Alexander [Gutachter] Schnurr. "Ordinal pattern analysis: limit theorems for multivariate long-range dependent Gaussian time series and a comparison to multivariate dependence measures / Ines Nüßgen ; Gutachter: Alexander Schnurr." Siegen : Universitätsbibliothek der Universität Siegen, 2021. http://nbn-resolving.de/urn:nbn:de:hbz:467-19650.

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25

Shang, Jing [Verfasser], and Nikolaos [Akademischer Betreuer] Koutsouleris. "Univariate and multivariate pattern analysis of preterm subjects: a multimodal neuroimaging study / Jing Shang ; Betreuer: Nikolaos Koutsouleris." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1213245745/34.

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26

Ferrero, Richard C. "Life history and multivariate analyses of habitat selection patterns among small cetaceans in the central North Pacific Ocean /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5475.

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27

Myers, Nicholas. "The role of cortical oscillations in the control and protection of visual working memory." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:c85253e0-6713-4fbc-801b-5f5bc8dea705.

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Visual working memory (WM) is the ability to hold information in mind for a short time before acting on it. The capacity of WM is strikingly limited. To make the most of this precious resource, humans exhibit a high degree of cognitive flexibility: We can prioritize information that is relevant to behavior, and inhibit unnecessary distractions. This thesis examines some behavioral and neural correlates of flexibility in WM. When information is of particular importance, anticipatory attention can be directed to where it will likely appear. Oscillations in visual cortex, in the 10-Hz range, play

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28

Jäckle, Dominik Peter [Verfasser]. "Projections for Visual Analysis of Multivariate Data : Methods for Identification, Interpretation, and Navigation of Patterns / Dominik Peter Jäckle." Konstanz : Bibliothek der Universität Konstanz, 2018. http://d-nb.info/1151047465/34.

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Herbst, Gernot. "Unscharfe Verfahren für lokale Phänomene in Zeitreihen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-70276.

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Die vorliegende Arbeit befaßt sich mit instationären, uni- oder multivariaten Zeitreihen, die bei der Beobachtung komplexer nichtlinearer dynamischer Systeme entstehen und sich der Modellierung durch ein globales Modell entziehen. In vielen natürlichen oder gesellschaftlichen Prozessen kann man jedoch wiederkehrende Phänomene beobachten, die von deren Rhythmen beeinflußt sind; ebenso lassen sich in technischen Prozessen beispielsweise aufgrund einer bedarfsorientierten Steuerung wiederholte, aber nicht periodische Verhaltensweisen ausmachen. Für solche Systeme und Zeitreihen wird deshalb vorge

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30

Di, Bono Maria Grazia. "Beyond mind reading: advanced machine learning techniques for FMRI data analysis." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3426149.

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The advent of functional Magnetic Resonance Imaging (fMRI) has significantly improved the knowledge about the neural correlates of perceptual and cognitive processes. The aim of this thesis is to discuss the characteristics of different approaches for fMRI data analysis, from the conventional mass univariate analysis (General Linear Model - GLM), to the multivariate analysis (i.e., data-driven and pattern based methods), and propose a novel, advanced method (Functional ANOVA Models of Gaussian Kernels - FAM-GK) for the analysis of fMRI data acquired in the context of fast event-related experim

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31

Li, Jian. "Effects of Full Information Maximum Likelihood, Expectation Maximization, Multiple Imputation, and Similar Response Pattern Imputation on Structural Equation Modeling with Incomplete and Multivariate Nonnormal Data." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281387395.

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Herbst, Gernot. "Unscharfe Verfahren für lokale Phänomene in Zeitreihen." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2010. https://monarch.qucosa.de/id/qucosa%3A19534.

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Die vorliegende Arbeit befaßt sich mit instationären, uni- oder multivariaten Zeitreihen, die bei der Beobachtung komplexer nichtlinearer dynamischer Systeme entstehen und sich der Modellierung durch ein globales Modell entziehen. In vielen natürlichen oder gesellschaftlichen Prozessen kann man jedoch wiederkehrende Phänomene beobachten, die von deren Rhythmen beeinflußt sind; ebenso lassen sich in technischen Prozessen beispielsweise aufgrund einer bedarfsorientierten Steuerung wiederholte, aber nicht periodische Verhaltensweisen ausmachen. Für solche Systeme und Zeitreihen wird deshalb vorge

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33

Hall, Kimberlee K., Brian G. Evanshen, Kurt J. Maier, and Phillip R. Scheuerman. "Application of Multivariate Statistical Analyses to Microbial Water Quality Parameters in Four Geographically Similar Creeks in Northeast Tennessee to Identify Patterns Associating Land Use to Fecal Pollution Sources." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etsu-works/2947.

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34

Caraglio, Agnès. "Temps, espaces, dynamiques de peuplement : la fin du Néolithique provençal." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM3082.

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L’espace provençal du 3ème millénaire av. n. è. laisse entrevoir un certain nombre d’éléments qui mettent en scène la complexité archéologique de la transition Néolithique final / Âge du Bronze ancien. En Provence, si le travail de J. Cauliez a ouvert la voie à un cadre chrono-culturel plus robuste et tissé une trame plus diversifiée des composantes céramiques de la fin du Néolithique, il n’en demeure pas moins que l’imbrication de l’évènement Campaniforme avec les différentes traditions locales se pose toujours comme un problème majeur, notamment en termes stratigraphiques, dans la compréhens

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Overell, Anne M. "Contextual expectancy, prior belief, and prediction error in early stage visual processing." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/229732/1/Anne_Overell_Thesis.pdf.

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This research investigated the balance of expectation and “surprise” in visual perception, recording brain activation with electroencephalography, and using novel multivariate data analysis. Testing different visual categories, we demonstrated that, within 250ms of stimulus presentation, top-down predictive processing enables the brain to detect mismatch of within-category identity (surprise) based on contextual probability (expectation). This also showed the brain discriminating conceptual-level identity, not simply differentiating category or form. Using deception, we then manipulated expect

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Damaso, Natalie. "Biogeographical Patterns of Soil Microbial Communities: Ecological, Structural, and Functional Diversity and their Application to Soil Provenance." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3006.

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The current ecological hypothesis states that the soil type (e.g., chemical and physical properties) determines which microbes occupy a particular soil and provides the foundation for soil provenance studies. As human profiles are used to determine a match between evidence from a crime scene and a suspect, a soil microbial profile can be used to determine a match between soil found on the suspect’s shoes or clothing to the soil at a crime scene. However, for a robust tool to be applied in forensic application, an understanding of the uncertainty associated with any comparisons and the paramete

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Bode, Stefan [Verfasser], Jutta [Gutachter] Stahl, Hilde [Gutachter] Haider, and Martin [Gutachter] Reurter. "Uncovering contextual biases in human decision-making. A multivariate analysis approach for patterns of functional magnetic resonance imaging data and event-related potentials / Stefan Bode ; Gutachter: Jutta Stahl, Hilde Haider, Martin Reurter." Köln : Universitäts- und Stadtbibliothek Köln, 2017. http://d-nb.info/1137322438/34.

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Cavdaroglu, Seda Özdemir. "Functional specialization in the brain." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17450.

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Menschen teilen mit vielen Spezies die Fähigkeit, aus einer Menge von Objekten deren Numerosität zu extrahieren. Es wird angenommen, dass diese Fähigkeit die Grundlage für die Menschen eigene, symbolisch-mathematische Fertigkeiten bildet. Daher ist ein besseres Verständnis der neuralen Charakteristiken dieser Fähigkeit von großer Bedeutung. Eines der einflussreichsten Modelle (das Triple Code Modell-TCM) nimmt an, dass dieser evolutionär alte Mechanismus in horizontalen Anteil des intraparietalen Sulcus verortet werden kann, der die Bedeutung von Anzahl in einer format- und modalitätsunabhängi

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Pitombo, Cira Souza. "Estudos de relações entre variáveis socioeconômicas, de uso do solo, participação em atividades e padrões de viagens encadeadas urbanas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/18/18137/tde-29062007-104354/.

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Um dos tópicos mais importantes na análise de demanda por transportes é a relação entre as necessidades individuais de realização de atividades geograficamente distribuídas, a estrutura urbana, as características individuais e domiciliares, o sistema de transporte e as diferenças no comportamento relacionado a viagens. Isto motivou o desenvolvimento desta pesquisa, que tem como objetivo principal analisar o comportamento individual subjacente ao encadeamento de viagens sob a perspectiva de três grupos de variáveis: (1) participação em atividades; (2) características socioeconômicas; e (3) uso

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Ndiaye, Ibrahima. "Planification urbaine, localisation résidentielle et comportements de mobilité à Dakar, Sénégal." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST1181.

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L'étude des comportements de mobilité est une thématique très peu investie dans les villes d'Afrique subsaharienne. Ces villes sont caractérisées par une croissance urbaine fulgurante avec comme corollaire un étalement spatial, des densités démographiques très élevées et une crise du secteur des transports dominé par les opérateurs artisanaux. Ces dynamiques, qui sont à l'origine de déséquilibres spatiaux, font que l'accès aux aménités urbaines devient très difficile pour les catégories de population les plus pauvres. A Dakar, les options d'aménagement ségrégationnistes prises par les autorité

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Lindig, León Cecilia. "Classification multilabels à partir de signaux EEG d'imaginations motrices combinées : application au contrôle 3D d'un bras robotique." Electronic Thesis or Diss., Université de Lorraine, 2017. http://www.theses.fr/2017LORR0016.

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Les interfaces cerveau-ordinateur (ou BCI en anglais pour Brain-Computer Interfaces) mettent en place depuis le système nerveux central un circuit artificiel secondaire qui remplace l’utilisation des nerfs périphériques, permettant entre autres à des personnes ayant une déficience motrice grave d’interagir, uniquement à l’aide de leur activité cérébrale, avec différents types d’applications, tels qu’un système d’écriture, une neuro-prothèse, un fauteuil roulant motorisé ou un bras robotique. Une technique répandue au sein des BCI pour enregistrer l’activité cérébrale est l’électroencéphalograp

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Lindig, León Cecilia. "Classification multilabels à partir de signaux EEG d'imaginations motrices combinées : application au contrôle 3D d'un bras robotique." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0016/document.

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Les interfaces cerveau-ordinateur (ou BCI en anglais pour Brain-Computer Interfaces) mettent en place depuis le système nerveux central un circuit artificiel secondaire qui remplace l’utilisation des nerfs périphériques, permettant entre autres à des personnes ayant une déficience motrice grave d’interagir, uniquement à l’aide de leur activité cérébrale, avec différents types d’applications, tels qu’un système d’écriture, une neuro-prothèse, un fauteuil roulant motorisé ou un bras robotique. Une technique répandue au sein des BCI pour enregistrer l’activité cérébrale est l’électroencéphalograp

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Görgen, Kai. "On Rules and Methods: Neural Representations of Complex Rule Sets and Related Methodological Contributions." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20711.

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Wo und wie werden komplexe Regelsätze im Gehirn repräsentiert? Drei empirische Studien dieser Doktorarbeit untersuchen dies experimentell. Eine weitere methodische Studie liefert Beiträge zur Weiterentwicklung der genutzten empirischen Methode. Die empirischen Studien nutzen multivariate Musteranalyse (MVPA) funktioneller Magnetresonanzdaten (fMRT) gesunder Probanden. Die Fragestellungen der methodischen Studie wurden durch die empirischen Arbeiten inspiriert. Wirkung und Anwendungsbreite der entwickelten Methode gehen jedoch über die Anwendung in den empirischen Studien dieser Arbeit hinaus.

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Lasmar, Nour-Eddine. "Modélisation stochastique pour l'analyse d'images texturées : Approches Bayésiennes pour la caractérisation dans le domaine des transformées." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2012. http://tel.archives-ouvertes.fr/tel-00809279.

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Le travail présenté dans cette thèse s'inscrit dans le cadre de la modélisation d'images texturées à l'aide des représentations multi-échelles et multi-orientations. Partant des résultats d'études en neurosciences assimilant le mécanisme de la perception humaine à un schéma sélectif spatio-fréquentiel, nous proposons de caractériser les images texturées par des modèles probabilistes associés aux coefficients des sous-bandes. Nos contributions dans ce contexte concernent dans un premier temps la proposition de différents modèles probabilistes permettant de prendre en compte le caractère leptoku

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Kietzmann, Tim Christian. "Aspects of Object Recognition: Sampling, Invariance, and Plasticity." Doctoral thesis, 2015. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2015051213203.

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We humans are visual creatures, constantly extracting information from the world around us. The source of our ability to understand the visual world is an intricate arrangement of multiple areas in our brains: the visual system. It enables us to recognize our friends and family in diverse conditions, to focus our attention on important aspects of a scene and performs invariant object categorization on multiple levels of abstraction. Vision has been in the focus of scientific interest for many decades and yet our knowledge of the cortical mechanisms involved is only limited. I here describe a s

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Markiewicz, Christopher Johnson. "Multivariate pattern analysis of input and output representations of speech." Thesis, 2017. https://hdl.handle.net/2144/24070.

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Repeating a word or nonword requires a speaker to map auditory representations of incoming sounds onto learned speech items, maintain those items in short-term memory, interface that representation with the motor output system, and articulate the target sounds. This dissertation seeks to clarify the nature and neuroanatomical localization of speech sound representations in perception and production through multivariate analysis of neuroimaging data. The major portion of this dissertation describes two experiments using functional magnetic resonance imaging (fMRI) to measure responses to the

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Wang, Yi-Cheng, and 王儀錚. "Multivariate Pattern Analysis of fMRI Data Using Deep Neural Network." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/uj48ud.

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碩士<br>國立交通大學<br>生醫工程研究所<br>106<br>Multivariate pattern analysis (MVPA) has been widely used to reveal task-related information embedded in the spatial patterns of cortical activity. Compared to univariate approaches, multivariate methods combine signals from all voxels within regions of interest. In this thesis, we proposed a novel MVPA method based on deep neural networks. This method not only can obtain the higher classification accuracy than Support Vector Machine (SVM), but also can identify a group of voxels with discriminative capability. That is proposed method can obtain a global funct

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Fouladi, Rachel Tanya. "A study of procedures to examine correlation pattern hypotheses under conditions of multivariate normality and nonnormality." Thesis, 1996. http://hdl.handle.net/2429/6275.

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A wide array of procedures have been proposed for testing correlation pattern. Many, but not all, of the statistical techniques available for testing correlation pattern are derived under the distributional condition of multivariate normality which does not always hold in the behavioral, educational and social sciences. Though a number of studies have explored the performance of structure analysis techniques under conditions of multivariate nonnormality, very little is known about the actual performance of many correlation structure analysis techniques under conditions of multivariate no

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Hanke, Michael [Verfasser]. "Advancing the understanding of brain function with multivariate pattern analysis / von Michael Hanke." 2009. http://d-nb.info/995705615/34.

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Chang, Ping-Chen, and 張沛琳. "Pattern Recognition of Multivariate Process Using Principal Components Analysis and MEWMA Control Chart." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45720843349933890268.

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碩士<br>元智大學<br>工業工程與管理學系<br>96<br>Because of the advancement of technology, the advanced automatic equipments can measure multiple quality characteristics of a product simultaneously. It is hard to find the unusual situation by using several univariate control chart in multivariate processes. It usually uses multivariate control chart to monitor the multiple relative quality characteristics. The purpose of the multivariate control charts is to detect the occurrence of some assignable cause which leads to the variations of multivariate processes, then an effective monitoring system is developed

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