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Dissertations / Theses on the topic 'Hidden Variables'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Ramachandran, Sowmya. "Theory refinement of Bayesian networks with hidden variables /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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2

Johansson, Lars-Göran. "Understanding quantum mechanics : a realist interpretation without hidden variables." Doctoral thesis, Stockholms universitet, Filosofiska institutionen, 1992. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-81416.

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3

Hallett, Joseph J. "Hidden Type Variables and Conditional Extension for More Expressive Generic Programs." Boston University Computer Science Department, 2007. https://hdl.handle.net/2144/1689.

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Generic object-oriented programming languages combine parametric polymorphism and nominal subtype polymorphism, thereby providing better data abstraction, greater code reuse, and fewer run-time errors. However, most generic object-oriented languages provide a straightforward combination of the two kinds of polymorphism, which prevents the expression of advanced type relationships. Furthermore, most generic object-oriented languages have a type-erasure semantics: instantiations of type parameters are not available at run time, and thus may not be used by type-dependent operations. Th

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4

Paneru, Dilip. "Experimental Tests of Multiplicative Bell Inequalities." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41621.

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This thesis is the synthesis of theoretical and experimental works performed in the area of quantum foundations, particularly on quantum correlations and experimental tests of multiplicative Bell inequalities. First we begin with a comprehensive theoretical work performed on the foundations of quantum mechanics, focusing on the puzzling concepts of quantum entanglement, and hidden variable theories. Specifically, we present a broad overview of different classes of hidden variable theories such as local, crypto-nonlocal, contextual and non-local theories, along with several Bell like inequaliti

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5

Pope, Damian. "Contrasting quantum mechanics to local hidden variables theories in quantum optics and quantum information science /." [St. Luica, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16765.pdf.

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6

Touron, Augustin. "Modélisation multivariée de variables météorologiques." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS264/document.

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La production d'énergie renouvelable et la consommation d'électricité dépendent largement des conditions météorologiques : température, précipitations, vent, rayonnement solaire... Ainsi, pour réaliser des études d'impact sur l'équilibre offre-demande, on peut utiliser un générateur de temps, c'est-à-dire un modèle permettant de simuler rapidement de longues séries de variables météorologiques réalistes, au pas de temps journalier. L'une des approches possibles pour atteindre cet objectif utilise les modèles de Markov caché : l'évolution des variables à modéliser est supposée dépendre d'une va

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7

Arribas, Gil Ana. "Estimation dans des modèles à variables cachées : alignement des séquences biologiques et modèles d'évolution." Paris 11, 2007. http://www.theses.fr/2007PA112054.

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Cette thèse est consacrée à l'estimation paramétrique dans certains modèles d'alignement de séquences biologiques. Ce sont des modèles construits à partir des considérations sur le processus d'évolution des séquences. Dans le cas de deux séquences, le processus d'évolution classique résulte dans un modèle d'alignement appelé pair-Hidden Markov Model (pair-HMM). Dans le pair-HMM les observations sont formées par le couple de séquences à aligner et l'alignement caché est une chaîne de Markov. D'un point de vue théorique nous donnons un cadre rigoureux pour ce modèle et étudions la consistance de

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8

Harms, Heather. "Hidden Variable." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5289.

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Hidden Variable is a novel that blends linear storytelling with the novel-in-stories form. It poses questions about the nature of identity as well as the feasibility of personal power, particularly with respect to disorders of the mind. Darla Pierson, the novel's protagonist, is a woman in crisis. She is steeped in self-loathing brought on by the knowledge that she has, in effect, become her dead father—a genius with an epic libido, habitually using and discarding people. Her father has another habit that Darla doesn't share: being struck by lightning. After the second strike kills him, Dar

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9

Dubarry, Cyrille. "Méthodes de lissage et d'estimation dans des modèles à variables latentes par des méthodes de Monte-Carlo séquentielles." Phd thesis, Institut National des Télécommunications, 2012. http://tel.archives-ouvertes.fr/tel-00762243.

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Les modèles de chaînes de Markov cachées ou plus généralement ceux de Feynman-Kac sont aujourd'hui très largement utilisés. Ils permettent de modéliser une grande diversité de séries temporelles (en finance, biologie, traitement du signal, ...) La complexité croissante de ces modèles a conduit au développement d'approximations via différentes méthodes de Monte-Carlo, dont le Markov Chain Monte-Carlo (MCMC) et le Sequential Monte-Carlo (SMC). Les méthodes de SMC appliquées au filtrage et au lissage particulaires font l'objet de cette thèse. Elles consistent à approcher la loi d'intérêt à l'aide

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10

Berard, Caroline. "Modèles à variables latentes pour des données issues de tiling arrays : Applications aux expériences de ChIP-chip et de transcriptome." Thesis, Paris, AgroParisTech, 2011. http://www.theses.fr/2011AGPT0067.

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Les puces tiling arrays sont des puces à haute densité permettant l'exploration des génomes à grande échelle. Elles sont impliquées dans l'étude de l'expression des gènes et de la détection de nouveaux transcrits grâce aux expériences de transcriptome, ainsi que dans l'étude des mécanismes de régulation de l'expression des gènes grâce aux expériences de ChIP-chip. Dans l'objectif d'analyser des données de ChIP-chip et de transcriptome, nous proposons une modélisation fondée sur les modèles à variables latentes, en particulier les modèles de Markov cachés, qui sont des méthodes usuelles de clas

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11

Besson, Virgile. "L’interprétation causale de la mécanique quantique : biographie d’un programme de recherche minoritaire (1951–1964)." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1014/document.

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L'interprétation causale de la mécanique quantique a été décrite en premier lieu par les historiens comme une conséquence de l'influence croissante du marxisme chez les physiciens des pays occidentaux. En effet, au cours des années 1950, le noyau du groupe de physiciens impliqués dans le programme causal autour de Jean-Pierre Vigier et Louis de Broglie à l'Institut Henri Poincaré est majoritairement constitué soit de membres, soit de sympathisants du PCF. Leurs travaux sont fortement influencés par les critiques soviétiques contre l'interprétation dominante de la mécanique quantique, l'interpr

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12

SANTOS, GEAN R. dos. "Algoritmo de colônia de formigas e redes neurais artificiais aplicados na monitoração e detecção de falhas em centrais nucleares." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26798.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-11-11T09:45:23Z No. of bitstreams: 0<br>Made available in DSpace on 2016-11-11T09:45:23Z (GMT). No. of bitstreams: 0<br>Um desafio recorrente em processos produtivos é o desenvolvimento de sistemas de monitoração e diagnóstico. Esses sistemas ajudam na detecção de mudanças inesperadas e interrupções, prevenindo perdas e mitigando riscos. Redes Neurais Artificiais (RNA) têm sido largamente utilizadas na criação de sistemas de monitoração. Normalmente as RNA utilizadas para resolver este tipo de problema são criadas levando-se em cont

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13

Grave, Edouard. "A Markovian approach to distributional semantics." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00940575.

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This thesis, which is organized in two independent parts, presents work on distributional semantics and on variable selection. In the first part, we introduce a new method for learning good word representations using large quantities of unlabeled sentences. The method is based on a probabilistic model of sentence, using a hidden Markov model and a syntactic dependency tree. The latent variables, which correspond to the nodes of the dependency tree, aim at capturing the meanings of the words. We develop an efficient algorithm to perform inference and learning in those models, based on online EM

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14

Budroni, Costantino [Verfasser]. "Temporal quantum correlations and hidden variable models / Costantino Budroni." Siegen : Universitätsbibliothek der Universität Siegen, 2014. http://d-nb.info/106415042X/34.

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15

Koo, Terry 1981. "Parse reranking with WordNet using a hidden variable model." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28431.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 79-80).<br>We present a new parse reranking algorithm that extends work in (Michael Collins and Terry Koo 2004) by incorporating WordNet (Miller et al. 1993) word senses. Instead of attempting explicit word sense disambiguation, we retain word sense ambiguity in a hidden variable model. We define a probability distribution over candidate parses and word sense assignments with a feature-based log-linear model, and we employ belief propag

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16

Valluru, Charan T. "The subcontractor safety problem: hidden, variable, and outsider work." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/414914.

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The continued rise of non-standard forms of employment, including increased use of subcontractors, has focused industry and research attention on how to manage the Occupational Health and Safety (OHS) of subcontractor employees. Existing measures to mitigate OHS risk appear to be less effective in the case of subcontractor employees as they are shaped by principal contractors and regulatory bodies in isolation to the realities of the non-standard nature of subcontractor work. From this point of view, in order to successfully manage subcontractor OHS risk, it is necessary to explore OHS risk a

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17

Siami, Navid. "An investigation of no-go theorems in hidden variable models of quantum mechanics." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57364.

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Realism defined in EPR paper as “In a complete theory there is an element corresponding to each element of reality.” Bell showed that there is a forbidden triangle (Realism, Quantum Statistics, and Locality), and we are only allowed to pick two out of three. In this thesis, we investigate other inequalities and no-go theorems that we face. We also discuss possible Hidden Variable Models that are tailored to be consistent with Quantum Mechanics and the specific no-go theorems. In the special case of the Leggett Inequality the proposed hidden variable is novel in the sense that the hidden variab

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18

Channarond, Antoine. "Recherche de structure dans un graphe aléatoire : modèles à espace latent." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112338/document.

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Cette thèse aborde le problème de la recherche d'une structure (ou clustering) dans lesnoeuds d'un graphe. Dans le cadre des modèles aléatoires à variables latentes, on attribue à chaque noeud i une variable aléatoire non observée (latente) Zi, et la probabilité de connexion des noeuds i et j dépend conditionnellement de Zi et Zj . Contrairement au modèle d'Erdos-Rényi, les connexions ne sont pas indépendantes identiquement distribuées; les variables latentes régissent la loi des connexions des noeuds. Ces modèles sont donc hétérogènes, et leur structure est décrite par les variables latentes

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19

Sastry, Avinash. "N-gram modeling of tabla sequences using Variable-Length Hidden Markov Models for improvisation and composition." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42792.

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This work presents a novel approach for the design of a predictive model of music that can be used to analyze and generate musical material that is highly context dependent. The system is based on an approach known as n-gram modeling, often used in language processing and speech recognition algorithms, implemented initially upon a framework of Variable-Length Markov Models (VLMMs) and then extended to Variable-Length Hidden Markov Models (VLHMMs). The system brings together various principles like escape probabilities, smoothing schemes and uses multiple representations of the data stream to c

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20

Perl, Robert. "Die Erwartungstheorie der Zinsstruktur : variable Zeitprämien, Regimeunsicherheit und Markov-Switching-Modelle ; eine empirischen Analyse für den deutschen Rentenmarkt /." Frankfurt am Main [u.a.] : Lang, 2003. http://www.gbv.de/dms/zbw/362547947.pdf.

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21

Rech, Gianluigi. "Modelling and forecasting economic time series with single hidden-layer feedforward autoregressive artificial neural networks." Doctoral thesis, Handelshögskolan i Stockholm, Ekonomisk Statistik (ES), 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:hhs:diva-591.

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This dissertation consists of 3 essays In the first essay, A Simple Variable Selection Technique for Nonlinear Models, written in cooperation with Timo Teräsvirta and Rolf Tschernig, I propose a variable selection method based on a polynomial expansion of the unknown regression function and an appropriate model selection criterion. The hypothesis of linearity is tested by a Lagrange multiplier test based on this polynomial expansion. If rejected, a kth order general polynomial is used as a base for estimating all submodels by ordinary least squares. The combination of regressors leading to the

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22

Ridall, Peter Gareth. "Bayesian Latent Variable Models for Biostatistical Applications." Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/16164/1/Peter_Ridall_Thesis.pdf.

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In this thesis we develop several kinds of latent variable models in order to address three types of bio-statistical problem. The three problems are the treatment effect of carcinogens on tumour development, spatial interactions between plant species and motor unit number estimation (MUNE). The three types of data looked at are: highly heterogeneous longitudinal count data, quadrat counts of species on a rectangular lattice and lastly, electrophysiological data consisting of measurements of compound muscle action potential (CMAP) area and amplitude. Chapter 1 sets out the structure and th

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23

Ridall, Peter Gareth. "Bayesian Latent Variable Models for Biostatistical Applications." Queensland University of Technology, 2004. http://eprints.qut.edu.au/16164/.

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In this thesis we develop several kinds of latent variable models in order to address three types of bio-statistical problem. The three problems are the treatment effect of carcinogens on tumour development, spatial interactions between plant species and motor unit number estimation (MUNE). The three types of data looked at are: highly heterogeneous longitudinal count data, quadrat counts of species on a rectangular lattice and lastly, electrophysiological data consisting of measurements of compound muscle action potential (CMAP) area and amplitude. Chapter 1 sets out the structure and th

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24

Grave, Edouard. "A Markovian approach to distributional semantics." Electronic Thesis or Diss., Paris 6, 2014. http://www.theses.fr/2014PA066002.

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Cette thèse, organisée en deux parties indépendantes, a pour objet la sémantique distributionnelle et la sélection de variables. Dans la première partie, nous introduisons une nouvelle méthode pour l'apprentissage de représentations de mots à partir de grandes quantités de texte brut. Cette méthode repose sur un modèle probabiliste de la phrase, utilisant modèle de Markov caché et arbre de dépendance. Nous présentons un algorithme efficace pour réaliser l'inférence et l'apprentissage dans un tel modèle, fondé sur l'algorithme EM en ligne et la propagation de message approchée. Nous évaluons le

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25

Alat, Gokcen. "A Variable Structure - Autonomous - Interacting Multiple Model Ground Target Tracking Algorithm In Dense Clutter." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615512/index.pdf.

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Tracking of a single ground target using GMTI radar detections is considered. A Variable Structure- Autonomous- Interactive Multiple Model (VS-A-IMM) structure is developed to address challenges of ground target tracking, while maintaining an acceptable level computational complexity at the same time. The following approach is used in this thesis: Use simple tracker structures<br>incorporate a priori information such as topographic constraints, road maps as much as possible<br>use enhanced gating techniques to minimize the eect of clutter<br>develop methods against stop-move motion and hide mo

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26

Alvarado, Barrantes Ricardo. "Statistical models in biogeography." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423067.

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We concentrate on the statistical methods used in Biogeography for modelling the spatial distribution of bird species. Due to the difficulty of specifying a joint multivariate spatial covariance structure in environmental processes, we factor such a joint distribution into a series of conditional models linked together in a hierarchical framework. We have a process that corresponds to an unobservable map with the actual information about a bird species, and the data correspond to the observations that are connected to that process. Markov chain Monte Carlo (MCMC) simulation approaches are used

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27

Avila, Manuel. "Optimisation de modèles markoviens pour la reconnaissance de l'écrit." Rouen, 1996. http://www.theses.fr/1996ROUES034.

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Cette thèse traite de l'optimisation de modèles markoviens dédiés à la reconnaissance de textes manuscrits, dans le cas particulier d'une application à vocabulaire réduit : la lecture des montants littéraux de chèques. Le premier chapitre décrit brièvement les techniques utilisées pour la reconnaissance de l'écrit. Nous présentons également les descriptions des mots que nous avons utilisées. Le second chapitre présente les modèles de Markov cache. Nous présentons notamment les différents niveaux de représentation du problème de la lecture de l'écrit dans le cas de modélisations markoviennes :

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28

Mattrand, Cécile. "Approche probabiliste de la tolérance aux dommages." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00738947.

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En raison de la gravité des accidents liés au phénomène de fatigue-propagation de fissure, les préoccupations de l'industrie aéronautique à assurer l'intégrité des structures soumises à ce mode de sollicitation revêtent un caractère tout à fait essentiel. Les travaux de thèse présentés dans ce mémoire visent à appréhender le problème de sûreté des structures aéronautiques dimensionnées en tolérance aux dommages sous l'angle probabiliste. La formulation et l'application d'une approche fiabiliste menant à des processus de conception et de maintenance fiables des structures aéronautiques en conte

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29

Vourdas, Apostolos. "Subsystems of a finite quantum system and Bell-like inequalities." 2014. http://hdl.handle.net/10454/10806.

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Yes<br>The set of subsystems Sigma(m) of a finite quantum system Sigma(n) with variables in Z(n) together with logical connectives, is a Heyting algebra. The probabilities tau(m vertical bar rho(n)) Tr vertical bar B(m)rho(n)] (where B(m) is the projector to Sigma(m)) are compatible with associativity of the join in the Heyting algebra, only if the variables belong to the same chain. Consequently, contextuality in the present formalism, has the chains as contexts. Various Bell-like inequalities are discussed. They are violated, and this proves that quantum mechanics is a contextual theory.

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30

Dwivedi, Saurav. "Probabilistic Interpretation of Quantum Mechanics with Schrödinger Quantization Rule." Habilitation à diriger des recherches, 2011. http://tel.archives-ouvertes.fr/tel-00573846.

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Quantum theory is a probabilistic theory, where certain variables are hidden or non-accessible. It results in lack of representation of systems under study. However, I deduce system's representation in probabilistic manner, introducing probability of existence w, and quantize it exploiting Schrödinger's quantization rule. The formalism enriches probabilistic quantum theory, and enables system's representation in probabilistic manner.

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31

Vourdas, Apostolos. "The complete Heyting algebra of subsystems and contextuality." Thesis, 2013. http://hdl.handle.net/10454/9747.

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no<br>The finite set of subsystems of a finite quantum system with variables in Z(n), is studied as a Heyting algebra. The physical meaning of the logical connectives is discussed. It is shown that disjunction of subsystems is more general concept than superposition. Consequently, the quantum probabilities related to commuting projectors in the subsystems, are incompatible with associativity of the join in the Heyting algebra, unless if the variables belong to the same chain. This leads to contextuality, which in the present formalism has as contexts, the chains in the Heyting algebra. Logical

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32

Lemyre, Gabriel. "Modèles de Markov à variables latentes : matrice de transition non-homogène et reformulation hiérarchique." Thesis, 2021. http://hdl.handle.net/1866/25476.

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Ce mémoire s’intéresse aux modèles de Markov à variables latentes, une famille de modèles dans laquelle une chaîne de Markov latente régit le comportement d’un processus stochastique observable à travers duquel transparaît une version bruitée de la chaîne cachée. Pouvant être vus comme une généralisation naturelle des modèles de mélange, ces processus stochastiques bivariés ont entre autres démontré leur faculté à capter les dynamiques variables de maintes séries chronologiques et, plus spécifiquement en finance, à reproduire la plupart des faits stylisés des rendements financiers. Nous nous i

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33

Meila, Marina, Michael I. Jordan, and Quaid Morris. "Estimating Dependency Structure as a Hidden Variable." 1997. http://hdl.handle.net/1721.1/7245.

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This paper introduces a probability model, the mixture of trees that can account for sparse, dynamically changing dependence relationships. We present a family of efficient algorithms that use EMand the Minimum Spanning Tree algorithm to find the ML and MAP mixtureof trees for a variety of priors, including the Dirichlet and the MDL priors.

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Meila, Marina, Michael I. Jordan, and Quaid Morris. "Estimating Dependency Structure as a Hidden Variable." 1998. http://hdl.handle.net/1721.1/7257.

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This paper introduces a probability model, the mixture of trees that can account for sparse, dynamically changing dependence relationships. We present a family of efficient algorithms that use EM and the Minimum Spanning Tree algorithm to find the ML and MAP mixture of trees for a variety of priors, including the Dirichlet and the MDL priors. We also show that the single tree classifier acts like an implicit feature selector, thus making the classification performance insensitive to irrelevant attributes. Experimental results demonstrate the excellent performance of the new model both in densi

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35

Vervoort, Louis. "Does Chance hide Necessity? : a reevaluation of the debate ‘determinism - indeterminism’ in the light of quantum mechanics and probability theory." Thèse, 2013. http://hdl.handle.net/1866/10221.

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Dans cette thèse l’ancienne question philosophique “tout événement a-t-il une cause ?” sera examinée à la lumière de la mécanique quantique et de la théorie des probabilités. Aussi bien en physique qu’en philosophie des sciences la position orthodoxe maintient que le monde physique est indéterministe. Au niveau fondamental de la réalité physique – au niveau quantique – les événements se passeraient sans causes, mais par chance, par hasard ‘irréductible’. Le théorème physique le plus précis qui mène à cette conclusion est le théorème de Bell. Ici les prémisses de ce théorème seront réexaminées.

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36

LODICO, Rita. "Trait anxiety: a hidden variable in physiological and pathological processes." Doctoral thesis, 2012. http://hdl.handle.net/11562/397160.

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Nell’uomo esiste una differenza nella risposta agli stimoli stressogeni, che dipende dalla personale predisposizione all’ansia, detta specificatamente “tratto d’ansia”. La differente suscettibilità all’ansia è stata studiata nei roditori creando ceppi selezionati per tratti di elevata e bassa ansia; inoltre è stato dimostrato, sia nell’uomo che nei ceppi selezionati di roditori, che differenti livelli di ansia basale influenzano la capacità dei soggetti di attuare un determinato compito, anche cognitivo. Tuttavia la suscettibilità individuale, all’interno di uno stesso ceppo di ratti naïve, è

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