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Relevant bibliographies by topics / Multivariate filter / Dissertations / Theses

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Dissertations / Theses on the topic 'Multivariate filter'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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1

SALMAN, RAMIZ. "Identification of common economic cycles using optimal multivariate filters." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/394321.

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This thesis includes two essays that are focused on developing multivariate filter approaches to be used for extracting common cyclical components where the common components can be used as an estimator of a business cycle. The first chapter aims to develop an optimal multivariate filter in order to extract common cyclical components of macroeconomic indicators. The filter allows macroeconomic series to be modeled as a phase shifted version of a coinciding business cycle (BC) while keeping other time series components such as the stochastic trend and idiosyncratic shocks intact (i.e. they are

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2

Pereira, Ana Regina Nunes. "Multivariate Filtering with Common Factors." Master's thesis, Instituto Superior de Economia e Gestão, 2009. http://hdl.handle.net/10400.5/1148.

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Mestrado em Econometria Aplicada e Previsão<br>This study discusses four commonly used optimal approximations to the infinite order moving average filter that ideally extracts from a time series fluctuations within a specified range of periodicities. Based on our findings, we use two of those approximations in the estimation of two macroeconomic signals: business cycle fluctuations and medium to long run component of output growth rate. This study dis-tinguishes itself from related literature by showing how to successfully incorporate in the multivariate band-pass approximations factors estima

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3

LUCCHESE, Gianfranco. "Multivariate hedonic models for heterogeneous product prices in dynamic supply chains." Doctoral thesis, Università degli studi di Bergamo, 2012. http://hdl.handle.net/10446/26713.

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Identifying parameters for state-space models in high dimensioned cases requires a complex methodology. We offer an example of application for hedonic prices and the hyper-parameter estimation for dynamic supply chains. An algorithm is created based on the Kalman filter-smoother and Expectation-Maximization procerures. Stopping rules for the algorithm are analyzed and compared. We detected the best stopping rule for our environment. In this way, the hedonic prices estimated can be used for any decision process. The thesis point to an application in forecast analysis for product prices. Accura

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4

Castellanos, Lucia. "Statistical Models and Algorithms for Studying Hand and Finger Kinematics and their Neural Mechanisms." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/273.

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The primate hand, a biomechanical structure with over twenty kinematic degrees of freedom, has an elaborate anatomical architecture. Although the hand requires complex, coordinated neural control, it endows its owner with an astonishing range of dexterous finger movements. Despite a century of research, however, the neural mechanisms that enable finger and grasping movements in primates are largely unknown. In this thesis, we investigate statistical models of finger movement that can provide insights into the mechanics of the hand, and that can have applications in neural-motor prostheses, ena

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Marhaba, Bassel. "Restauration d'images Satellitaires par des techniques de filtrage statistique non linéaire." Thesis, Littoral, 2018. http://www.theses.fr/2018DUNK0502/document.

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Le traitement des images satellitaires est considéré comme l'un des domaines les plus intéressants dans les domaines de traitement d'images numériques. Les images satellitaires peuvent être dégradées pour plusieurs raisons, notamment les mouvements des satellites, les conditions météorologiques, la dispersion et d'autres facteurs. Plusieurs méthodes d'amélioration et de restauration des images satellitaires ont été étudiées et développées dans la littérature. Les travaux présentés dans cette thèse se concentrent sur la restauration des images satellitaires par des techniques de filtrage statis

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6

Lee, Anthony. "Towards smooth particle filters for likelihood estimation with multivariate latent variables." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1547.

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In parametrized continuous state-space models, one can obtain estimates of the likelihood of the data for fixed parameters via the Sequential Monte Carlo methodology. Unfortunately, even if the likelihood is continuous in the parameters, the estimates produced by practical particle filters are not, even when common random numbers are used for each filter. This is because the same resampling step which drastically reduces the variance of the estimates also introduces discontinuities in the particles that are selected across filters when the parameters change. When the state variables are univa

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7

Al, Chaer Toufic. "Robust control of multivariable systems : application to a three-phase shunt active filter in low voltage electrical networks." Poitiers, 2008. http://www.theses.fr/2008POIT2352.

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The work done in this thesis aims to combine the knowledge of two research areas: the automatic control area and the power electronics area, in order to elaborate a methodology for controlling a three-phase shunt active filter system. Indeed, this subject has been widely handled by the specialists in the field of power electronics in order to eliminate voltage and current harmonics in electrical distribution networks. Most of existing control strategies of active filters have been formulated as a current reference tracking control design problem. The alternative approach that we propose is to

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8

Cunha, Camilla Lima. "Estudo da previsão de propriedades do biodiesel utilizando espectros de infravermelho e calibração multivariada." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7293.

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O biodiesel tem sido amplamente utilizado como uma fonte de energia renovável, que contribui para a diminuição de demanda por diesel mineral. Portanto, existem várias propriedades que devem ser monitoradas, a fim de produzir e distribuir biodiesel com a qualidade exigida. Neste trabalho, as propriedades físicas do biodiesel, tais como massa específica, índice de refração e ponto de entupimento de filtro a frio foram medidas e associadas a espectrometria no infravermelho próximo (NIR) e espectrometria no infravermelho médio (Mid-IR) utilizando ferramentas quimiométricas. Os métodos de regressão

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9

Plappally, Anand Krishnan. "Theoretical and Empirical Modeling of Flow, Strength, Leaching and Micro-Structural Characteristics of V Shaped Porous Ceramic Water Filters." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276860054.

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10

Frey, Roman. "Monte Carlo methods with application to the pricing of interest rate derivatives /." St. Gallen, 2008. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/03393436001/$FILE/03393436001.pdf.

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11

Paim, Anderson de Campos. "Controle preditivo retroalimentado por estados estimados, aplicado a uma planta laboratorial." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/21258.

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A retroalimentação de controladores preditivos que utilizam modelos em espaço de estado pode ser realizada de duas formas: (a) correção por bias, em que as saídas preditas são corrigidas adicionando-se um valor proporcional a discrepância encontrada entre o valor medido atual e sua respectiva predição e por (b) retroalimentação dos estados, onde se determinam as condições iniciais através da estimação dos estados, e a partir de uma melhor condição inicial se realizam as predições futuras usadas no cálculo das ações de controle. Nesta dissertação estas duas abordagens são comparadas utilizando

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12

Le, Rouzic Yann. "Observateurs non linéaires de colonnes à distiller : application industrielle." Rouen, 1996. http://www.theses.fr/1996ROUES070.

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Cette thèse expose une application industrielle du filtre de Kalman étendu à grand gain pour l'estimation et le contrôle des compositions d'une colonne à distiller. Elle démontre l'intérêt pratique des observateurs pour le contrôle des procédés en exposant une méthodologie d'application et les résultats d'implantation obtenus sur site. Cette application industrielle a pour but d'améliorer le contrôle d'une unité de distillation en couplant un observateur avec un contrôleur multi-variable linéaire existant. Le contrôleur étant déterminé à l'avance, les travaux se sont essentiellement attachés à

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13

Luque, Juan Carlos Cutipa. "Identificação e controle de um veículo submersível autônomo sub-atuado." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-03072013-143252/.

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O presente trabalho apresenta a descrição de um modelo matemático completo em seis graus de liberdade para um Veículo Submersível Autônomo (VSA) sub-atuado. Desenvolveram-se métodos de identificação de sistemas para identificar o modelo não linear do veículo. A fim de evitar problemas de divergência na estimação de parâmetros hidrodinâmicos do modelo, usou-se o método de transformação paramétrica. Usou-se o filtro estendido de Kalman como estratégia para o processo de estimação de parâmetros quando ruídos de natureza gaussiana estavam presentes no modelo e nas medidas. Com o objetivo de estima

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14

Congedo, Marco. "EEG Source Analysis." Habilitation à diriger des recherches, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00880483.

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Electroencephalographic data recorded on the human scalp can be modeled as a linear mixture of underlying dipolar source generators. The characterization of such generators is the aim of several families of signal processing methods. In this HDR we consider in several details three of such families, namely 1) EEG distributed inverse solutions, 2) diagonalization methods, including spatial filtering and blind source separation and 3) Riemannian geometry. We highlight our contributions in each of this family, we describe algorithms reporting all necessary information to make purposeful use of th

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15

Khabzaoui, Mohammed. "Modélisation et résolution multi-objectifs des règles d'association : application à l'analyse de données biopuces." Lille 1, 2006. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/f2b2a8a7-87c4-44d0-bbe9-90531207f151.

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La technologie haut débit des puces à ADN permet de visualiser simultanément le niveau d'expression de plusieurs milliers de gènes ou groupe de gènes dans des conditions différentes Cette technologie haut débit génère une grande diversité de données qui implique un important travail d'analyse. Une de ces problématiques, concerne la recherche de règles d'associations qui consiste à extraire un ensemble de formules logiques conditionnelles permettant de déduire la valeur d'un attribut but à partir des valeurs d'autres attributs. La recherche de règles d'association peut être vue comme un problèm

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16

Grenaille, Sylvain. "Synthèse de filtres de diagnostic pour les systèmes modélisés sous forme LPV." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2006. http://tel.archives-ouvertes.fr/tel-00098299.

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Cette thèse aborde le problème de diagnostic à base de modèles pour la classe des systèmes dynamiques modélisés sous forme LPV (Linéaires à Paramètres Variants). Nous présentons une nouvelle méthode de synthèse de filtres de détection et localisation robustes. Une condition suffisante est établie pour garantir les performances en terme de sensibilité du signal indicateur de défauts vis à vis de la classe de défauts considérés. La méthode proposée permet également de formuler des contraintes de robustesse vis-à-vis des paramètres variants dans le temps et des perturbations exogènes. L'approche

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17

Yang, Wen Hao, and 楊文灝. "VLSI multivariate data ordering median filter for color image processing." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/81178400594531418196.

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18

Chen, Han-Tsung, and 陳琮翰. "Application of multivariate analysis to evaluate the significant parameter of contact filter for treating river water." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/09183151537313958065.

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碩士<br>國立高雄第一科技大學<br>環境與安全衛生工程研究所<br>103<br>Because of receiving lots of municipal, industrial and livestock wastewater, the An-Shun Drainage, a tributary of the Yan-Shoei Creek in southern Taiwan, is often severely polluted. For water pollution control, the riverwater of An-Shun Drainage is pumped and treated with contact filters before flowing into the Yan-Shoei Creek. The purposes of this study are to apply the multivariate statistical analysis to evaluate the significant parameters of contact filter for treating river water and to investigate treatability of this contact filter for variou

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19

Seeletse, Solly Matshonisa. "Aspects of bivariate time series." Diss., 1994. http://hdl.handle.net/10500/17705.

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Exponential smoothing algorithms are very attractive for the practical world such as in industry. When considering bivariate exponential smoothing methods, in addition to the properties of univariate methods, additional properties give insight to relationships between the two components of a process, and also to the overall structure of the model. It is important to study these properties, but even with the merits the bivariate exponential smoothing algorithms have, exponential smoothing algorithms are nonstatistical/nonstochastic and to study the properties within exponential smoothin

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20

Vu, Phuong Anh. "Multivariate stochastic loss reserving with common shock approaches." Thèse, 2019. http://hdl.handle.net/1866/22668.

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21

Szkudlarek, Cheryl Ann. "Multivariate Statistical Methods Applied to the Analysis of Trace Evidence." 2013. http://hdl.handle.net/1805/3456.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>The aim of this study was to use multivariate statistical techniques to: (1) determine the reproducibility of fiber evidence analyzed by MSP, (2) determine whether XRF is an appropriate technique for forensic tape analysis, and (3) determine if DART/MS is an appropriate technique for forensic tape analysis. This was achieved by employing several multivariate statistical techniques including agglomerative hierarchical clustering, principal component analysis, discriminant analysis, and analysis of variance. First, twelve dyed textil

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