Literatura académica sobre el tema "Informations manquantes"
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Artículos de revistas sobre el tema "Informations manquantes"
BESNIER, Jean-Baptiste, Frédéric CHERQUI, Gilles CHUZEVILLE y Aurélie LAPLANCHE. "Amélioration de la connaissance patrimoniale des réseaux d’assainissement de la métropole de Lyon". TSM 12 2023, TSM 12 2023 (20 de diciembre de 2023): 169–77. http://dx.doi.org/10.36904/tsm/202312169.
Texto completoBarham, Lisa. "Leroy Stone. Dimensions of Job-family Tension: A Room with a National View. Ottawa: Statistics Canada, 1995. Catalogue 89-540E." Canadian Journal on Aging / La Revue canadienne du vieillissement 15, n.º 4 (1996): 711–14. http://dx.doi.org/10.1017/s0714980800009521.
Texto completoMiandrisoa, RM, B. Ramilitiana, RR Rakotonoel, W. Rasamoelina, H. Ravaoavy, SA Ralamboson, N. Rabearivony y S. Rakotoarimanana. "CONNAISSANCES DE L’HYPERTENSION ARTERIELLE ET DE SES COMPLICATIONS AU CENTRE HOSPITALIER DE SOAVINANDRIANA". Journal of Current Medical Research and Opinion 3, n.º 01 (24 de enero de 2020): 415–21. http://dx.doi.org/10.15520/jcmro.v3i01.253.
Texto completoBlanpain, O., L. Petit, J. Le Gouevec y S. Merchez. "Une approche pour l'approximation du profil en long des réseaux d'assainissement à partir de données incomplètes". Revue des sciences de l'eau 12, n.º 4 (12 de abril de 2005): 661–69. http://dx.doi.org/10.7202/705371ar.
Texto completoBAUMONT, R., P. CHAMPCIAUX, J. AGABRIEL, J. ANDRIEU, J. AUFRÈRE, B. MICHALET-DOREAU y C. DEMARQUILLY. "Une démarche intégrée pour prévoir la valeur des aliments pour les ruminants : PrévAlim pour INRAtion". INRAE Productions Animales 12, n.º 3 (1 de junio de 1999): 183–94. http://dx.doi.org/10.20870/productions-animales.1999.12.3.3878.
Texto completoBéguinot, Jean. "Extrapolation des inventaires de biodiversité incomplets : comment estimer au mieux le nombre d’espèces manquantes et prévoir l’effort additionnel d’échantillonnage requis pour réduire ce nombre". Bulletin de la société linnéenne de Lyon 85, n.º 7 (2016): 246–58. http://dx.doi.org/10.3406/linly.2016.17799.
Texto completoMassie, Jean-Marc. "Système expert et communication d'entreprise : communication manquée, information manquante". Quaderni 20, n.º 1 (1993): 117–32. http://dx.doi.org/10.3406/quad.1993.1020.
Texto completoDarbellay, Karine. "Enjeux de professionnalisation des intervenants de la rue en Suisse romande : entre correspondants de nuit et travailleurs sociaux hors murs". Revue internationale animation, territoires et pratiques socioculturelles, n.º 21 (20 de junio de 2022): 1–12. http://dx.doi.org/10.55765/atps.i21.1362.
Texto completoFOURNIER, E., C. LEVEQUE, K. RUDELLE, H. DE FREMINVILLE, L. ROUGE, N. DEPARIS y M. VICARD-OLAGNE. "ACCUEIL DES FEMMES VICTIMES DE VIOLENCES CONJUGALES : CARTOGRAPHIE ET MISE EN PLACE D UN RESEAU DE RECHERCHE EN SOINS PRIMAIRES". EXERCER 34, n.º 191 (1 de marzo de 2022): 110–15. http://dx.doi.org/10.56746/exercer.2023.191.110.
Texto completo"Cour d’appel de Liège (3 e ch. A), 14 décembre 2021". Forum de l’assurance N° 222, n.º 3 (1 de marzo de 2022): 57–58. http://dx.doi.org/10.3917/foas.222.0057.
Texto completoTesis sobre el tema "Informations manquantes"
Fissore, Giancarlo. "Generative modeling : statistical physics of Restricted Boltzmann Machines, learning with missing information and scalable training of Linear Flows". Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG028.
Texto completoNeural network models able to approximate and sample high-dimensional probability distributions are known as generative models. In recent years this class of models has received tremendous attention due to their potential in automatically learning meaningful representations of the vast amount of data that we produce and consume daily. This thesis presents theoretical and algorithmic results pertaining to generative models and it is divided in two parts. In the first part, we focus our attention on the Restricted Boltzmann Machine (RBM) and its statistical physics formulation. Historically, statistical physics has played a central role in studying the theoretical foundations and providing inspiration for neural network models. The first neural implementation of an associative memory (Hopfield, 1982) is a seminal work in this context. The RBM can be regarded to as a development of the Hopfield model, and it is of particular interest due to its role at the forefront of the deep learning revolution (Hinton et al. 2006).Exploiting its statistical physics formulation, we derive a mean-field theory of the RBM that let us characterize both its functioning as a generative model and the dynamics of its training procedure. This analysis proves useful in deriving a robust mean-field imputation strategy that makes it possible to use the RBM to learn empirical distributions in the challenging case in which the dataset to model is only partially observed and presents high percentages of missing information. In the second part we consider a class of generative models known as Normalizing Flows (NF), whose distinguishing feature is the ability to model complex high-dimensional distributions by employing invertible transformations of a simple tractable distribution. The invertibility of the transformation allows to express the probability density through a change of variables whose optimization by Maximum Likelihood (ML) is rather straightforward but computationally expensive. The common practice is to impose architectural constraints on the class of transformations used for NF, in order to make the ML optimization efficient. Proceeding from geometrical considerations, we propose a stochastic gradient descent optimization algorithm that exploits the matrix structure of fully connected neural networks without imposing any constraints on their structure other then the fixed dimensionality required by invertibility. This algorithm is computationally efficient and can scale to very high dimensional datasets. We demonstrate its effectiveness in training a multylayer nonlinear architecture employing fully connected layers
Guastella, Davide Andrea. "Dynamic learning of the environment for eco-citizen behavior". Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30160.
Texto completoThe development of sustainable smart cities requires the deployment of Information and Communication Technology (ICT) to ensure better services and available information at any time and everywhere. As IoT devices become more powerful and low-cost, the implementation of an extensive sensor network for an urban context can be expensive. This thesis proposes a technique for estimating missing environmental information in large scale environments. Our technique enables providing information whereas devices are not available for an area of the environment not covered by sensing devices. The contribution of our proposal is summarized in the following points: * limiting the number of sensing devices to be deployed in an urban environment; * the exploitation of heterogeneous data acquired from intermittent devices; * real-time processing of information; * self-calibration of the system. Our proposal uses the Adaptive Multi-Agent System (AMAS) approach to solve the problem of information unavailability. In this approach, an exception is considered as a Non-Cooperative Situation (NCS) that has to be solved locally and cooperatively. HybridIoT exploits both homogeneous (information of the same type) and heterogeneous information (information of different types or units) acquired from some available sensing device to provide accurate estimates in the point of the environment where a sensing device is not available. The proposed technique enables estimating accurate environmental information under conditions of uncertainty arising from the urban application context in which the project is situated, and which have not been explored by the state-of-the-art solutions: * openness: sensors can enter or leave the system at any time without the need for any reconfiguration; * large scale: the system can be deployed in a large, urban context and ensure correct operation with a significative number of devices; * heterogeneity: the system handles different types of information without any a priori configuration. Our proposal does not require any input parameters or reconfiguration. The system can operate in open, dynamic environments such as cities, where a large number of sensing devices can appear or disappear at any time and without any prior notification. We carried out different experiments to compare the obtained results to various standard techniques to assess the validity of our proposal. We also developed a pipeline of standard techniques to produce baseline results that will be compared to those obtained by our multi-agent proposal
El-Taib, El-Rafehi Ahmed. "Estimation des données manquantes dans les séries chronologiques". Montpellier 2, 1992. http://www.theses.fr/1992MON20239.
Texto completoBock, Dumas Élodie de. "Identification de stratégies d’analyse de variables latentes longitudinales en présence de données manquantes potentiellement informatives". Nantes, 2014. http://archive.bu.univ-nantes.fr/pollux/show.action?id=ed3dcb7e-dec1-4506-b99d-50e3448d1ce4.
Texto completoThe purpose of this study was to identify the most adequate strategy to analyse longitudinal latent variables (patient reported outcomes) when potentially informative missing data are observed. Models coming from classical test theory and Rasch-family were compared. In order to obtain an objective comparison of these methods, simulation studies were used. Moreover, illustrative examples were analysed. This research work showed that the method that comes from Rasch-family models performs better than the other in some circumstances, mainly for power. However, limitations were highlighted. Moreover, some results were obtained about personal mean score imputation
Mohd, Salleh Mohd Najib. "Construction d'arbres de décision avec valeurs incomplètes pour la sélection de graines de palmier à huile". La Rochelle, 2008. http://www.theses.fr/2008LAROS240.
Texto completoA missing value in incomplete information always inherent the accuracy of classification tasks when a decision tree is used to classify unseen cases. There will be cases where plausible values are required to retain towards more principled and less intrusive. In order to handle the attribute with missing values, the researcher generalizes decision algorithms that provide simpler and more understandable models to optimally fulfill human expert requirement and constraint. Our objective is to partition data by taking full advantage of the information with the presence of missing values ; but with supporting global information to achieve better performance. The contributions of this study are newly developed algorithms and analyses for planting material classification. The researcher reports the empirical results that may provide high returnin planting material breeders in oil palm industry through effective policies design and decision making
Hawarah, Lamis. "Une approche probabiliste pour le classement d'objets incomplètement connus dans un arbre de décision". Phd thesis, Université Joseph Fourier (Grenoble), 2008. http://tel.archives-ouvertes.fr/tel-00335313.
Texto completoNous expliquons notre méthode et nous la testons sur des bases de données réelles. Nous comparons nos résultats avec ceux donnés par la méthode C4.5 et AAO.
Nous proposons également un algorithme basé sur la méthode des k plus proches voisins qui calcule pour chaque objet de la base de test sa fréquence dans la base d'apprentissage. Nous comparons ces fréquences avec les résultats de classement données par notre approche, C4.5 et AAO. Finalement, nous calculons la complexité de construction des arbres d'attributs ainsi que la complexité de classement d'un objet incomplet en utilisant notre approche, C4.5 et AAO.
Hawarah, Lamis. "Une approche probabiliste pour le classement d'objets incomplètement connus dans un arbre de décision". Phd thesis, Grenoble 1, 2008. http://www.theses.fr/2008GRE10164.
Texto completoWe describe in this thesis an approach to fill missing values in decision trees during the classification phase. This approach is derived from the it ordered attribute trees (OAT) method, proposed by Lobo and Numao in 2000, which builds a decision tree for each attribute and uses these trees to fill the missing attribute values. It is based on the Mutual Information between the attributes and the class. Our approach extends this method by taking the dependence between the attributes into account when constructing the attributes trees, and provides a probability distribution as a result when classifying an incomplete object (instead of the most probable class). We present our approach and we test it on some real databases. We also compare our results with those given by the C4. 5 method and OAT. We also propose a k-nearest neighbours algorithm which calculates for each object from the test data its frequency in the learning data. We compare these frequencies with the classification results given by our approach, C4. 5 and OAT. Finally, we calculate the complexity of constructing the attribute trees and the complexity of classifying a new instance with missing values using our classification algorithm, C4. 5 and OAT
Nguyen, Huu Du. "System Reliability : Inference for Common Cause Failure Model in Contexts of Missing Information". Thesis, Lorient, 2019. http://www.theses.fr/2019LORIS530.
Texto completoThe effective operation of an entire industrial system is sometimes strongly dependent on the reliability of its components. A failure of one of these components can lead to the failure of the system with consequences that can be catastrophic, especially in the nuclear industry or in the aeronautics industry. To reduce this risk of catastrophic failures, a redundancy policy, consisting in duplicating the sensitive components in the system, is often applied. When one of these components fails, another will take over and the normal operation of the system can be maintained. However, some situations that lead to simultaneous failures of components in the system could be observed. They are called common cause failure (CCF). Analyzing, modeling, and predicting this type of failure event are therefore an important issue and are the subject of the work presented in this thesis. We investigate several methods to deal with the statistical analysis of CCF events. Different algorithms to estimate the parameters of the models and to make predictive inference based on various type of missing data are proposed. We treat confounded data using a BFR (Binomial Failure Rare) model. An EM algorithm is developed to obtain the maximum likelihood estimates (MLE) for the parameters of the model. We introduce the modified-Beta distribution to develop a Bayesian approach. The alpha-factors model is considered to analyze uncertainties in CCF. We suggest a new formalism to describe uncertainty and consider Dirichlet distributions (nested, grouped) to make a Bayesian analysis. Recording of CCF cause data leads to incomplete contingency table. For a Bayesian analysis of this type of tables, we propose an algorithm relying on inverse Bayes formula (IBF) and Metropolis-Hasting algorithm. We compare our results with those obtained with the alpha- decomposition method, a recent method proposed in the literature. Prediction of catastrophic event is addressed and mapping strategies are described to suggest upper bounds of prediction intervals with pivotal method and Bayesian techniques. Recent events have highlighted the importance of reliability redundant systems and we hope that our work will contribute to a better understanding and prediction of the risks of major CCF events
Petit, Renaud Simon. "Application de la théorie des croyances et des systèmes flous à l'estimation fonctionnelle en présence d'informations incertaines ou imprécises". Compiègne, 1999. http://www.theses.fr/1999COMP1237.
Texto completoFaucheux, Lilith. "Learning from incomplete biomedical data : guiding the partition toward prognostic information". Electronic Thesis or Diss., Université Paris Cité, 2021. http://www.theses.fr/2021UNIP5242.
Texto completoThe topic of this thesis is partition learning analyses in the context of incomplete data. Two methodological development are presented, with two medical and biomedical applications. The first methodological development concerns the implementation of unsupervised partition learning in the presence of incomplete data. Two types of incomplete data were considered: missing data and left-censored data (that is, values “lower than some detection threshold"), and handled through multiple imputation (MI) framework. Multivariate imputation by chained equation (MICE) was used to perform tailored imputations for each type of incomplete data. Then, for each imputed dataset, unsupervised learning was performed, with a data-based selected number of clusters. Last, a consensus clustering algorithm was used to pool the partitions, as an alternative to Rubin's rules. The second methodological development concerns the implementation of semisupervised partition learning in an incomplete dataset, to combine data structure and patient survival. This aimed at identifying patient profiles that relate both to differences in the group structure extracted from the data, and in the patients' prognosis. The supervised (prognostic value) and unsupervised (group structure) objectives were combined through Pareto multi-objective optimization. Missing data were handled, as above, through MI, with Rubin's rules used to combine the supervised and unsupervised objectives across the imputations, and the optimal partitions pooled using consensus clustering. Two applications are provided, one on the immunological landscape of the breast tumor microenvironment and another on the COVID-19 infection in the context of a hematological disease
Actas de conferencias sobre el tema "Informations manquantes"
Plutniak, Sébastien. "L’automatisation éditoriale da la publication des données. Des tirés-à-part aux data journals en archéologie (1950-2000)". En Séminaire PéLiAS (Périodiques, Littérature, Arts, Sciences). MSH Paris-Saclay Éditions, 2023. http://dx.doi.org/10.52983/qbtj3499.
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