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Auswahl der wissenschaftlichen Literatur zum Thema „Décalage de jeu de données“
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Zeitschriftenartikel zum Thema "Décalage de jeu de données"
Branellec, Gurvan, und Béatrice Sommier. „De la règle du jeu aux jeux sur la règle : l’utilisation des données numériques personnelles dans la présidentielle française de 2017“. Gestion et management public Volume 11 / N° 2, Nr. 2 (05.10.2023): 69–99. http://dx.doi.org/10.3917/gmp.112.0069.
Der volle Inhalt der QuelleMukwabatu, David Mukulu. „Des oxymores en politique congolaise (RDC). D’un État de droit sans droit à une démocratie illibérale“. KAS African Law Study Library - Librairie Africaine d’Etudes Juridiques 11, Nr. 1 (2024): 68–88. http://dx.doi.org/10.5771/2363-6262-2024-1-68.
Der volle Inhalt der QuelleRoyet, Thomas, Nicolas Mascret und Olivier Vors. „Analyse de l’activité d’apprenants dans un dispositif visant le développement d’apprentissage tactique en badminton“. Staps N° 140, Nr. 2 (12.10.2023): 75–96. http://dx.doi.org/10.3917/sta.140.0075.
Der volle Inhalt der QuelleEngel, Vincent. „"Tchiripisch" : le jeu du décalage“. Textyles, Nr. 5 (15.11.1988): 75–85. http://dx.doi.org/10.4000/textyles.1709.
Der volle Inhalt der QuelleMorin, Gilles. „1968, les raisons d'un hors-jeu de la FGDS“. Parlement[s], Revue d'histoire politique 9, Nr. 1 (14.05.2008): 62–79. http://dx.doi.org/10.3917/parl.009.0062.
Der volle Inhalt der QuelleRenard, Damien. „Les jeux publicitaires dans les stratégies de collecte de données numériques“. Recherches en Communication 49 (01.11.2019): 53–69. http://dx.doi.org/10.14428/rec.v49i49.52163.
Der volle Inhalt der QuelleSalvio, Thiago de Souza. „A teoria de Althusser sobre o contrato social de Rousseau“. Revista Aurora 12, Edição Esp (20.12.2019): 9–16. http://dx.doi.org/10.36311/1982-8004.2019.v12esp.03.p9.
Der volle Inhalt der QuelleElton-Marshall, Tara, Rochelle Wijesingha, Taryn Sendzik, Steven E. Mock, Mark van der Maas, John McCready, Robert E. Mann und Nigel E. Turner. „Marital Status and Problem Gambling among Older Adults: An Examination of Social Context and Social Motivations“. Canadian Journal on Aging / La Revue canadienne du vieillissement 37, Nr. 3 (13.07.2018): 318–32. http://dx.doi.org/10.1017/s071498081800017x.
Der volle Inhalt der QuelleLuquiens, A., M. Lagadec, A. Amirouche und M. Reynaud. „Repérage des joueurs de poker en ligne problématiques et pathologiques : évaluation transversale des joueurs du site de poker Winamax et construction d’un outil de dépistage en ligne“. European Psychiatry 29, S3 (November 2014): 536–37. http://dx.doi.org/10.1016/j.eurpsy.2014.09.404.
Der volle Inhalt der QuelleDa Sylva, Lyne. „Les données et leurs impacts théoriques et pratiques sur les professionnels de l’information“. Documentation et bibliothèques 63, Nr. 4 (05.12.2017): 5–34. http://dx.doi.org/10.7202/1042308ar.
Der volle Inhalt der QuelleDissertationen zum Thema "Décalage de jeu de données"
Nodet, Pierre. „Biquality learning : from weakly supervised learning to distribution shifts“. Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASG030.
Der volle Inhalt der QuelleThe field of Learning with weak supervision is called Weakly Supervised Learning and aggregates a variety of situations where the collected ground truth is imperfect. The collected labels may suffer from bad quality, non-adaptability, or insufficient quantity. In this report, we propose a novel taxonomy of Weakly Supervised Learning as a continuous cube called the Weak Supervision Cube that encompasses all of the weaknesses of supervision. To design algorithms capable of handling any weak supervisions, we suppose the availability of a small trusted dataset, without bias and corruption, in addition to the potentially corrupted dataset. The trusted dataset allows the definition of a generic learning framework named Biquality Learning. We review the state-of-the-art of these algorithms that assumed the availability of a small trusted dataset. Under this framework, we propose an algorithm based on Importance Reweighting for Biquality Learning (IRBL). This classifier-agnostic approach is based on the empirical estimation of the Radon-Nikodym derivative (RND), to build a risk-consistent estimator on reweighted untrusted data. Then we extend the proposed framework to dataset shifts. Dataset shifts happen when the data distribution observed at training time is different from what is expected from the data distribution at testing time. So we propose an improved version of IRBL named IRBL2, capable of handling such dataset shifts. Additionally, we propose another algorithm named KPDR based on the same theory but focused on covariate shift instead of the label noise formulation. To diffuse and democratize the Biquality Learning Framework, we release an open-source Python library à la Scikit-Learn for Biquality Learning named biquality-learn
Betta, Mohammed. „Les données évolutives et le décalage : l'analyse statique et l'analyse dynamique“. Rennes 2, 1995. http://www.theses.fr/1995REN20010.
Der volle Inhalt der QuelleThe objective of this thesis is to analyse three index data tables. We are especially interested in the analysis of these data in the case where the third index indicates time. In the first part of this study, we present some of methods used for anlysing three way data. One chapter will be given over to all those that incorporate contiguity structure in their approach. In the second part, we develop a new method of evolutive data analysis under a temporal contiguity constraint. This method is elaborated in two indepedent and complementary steps. First, we introduce the notion of an interval matrix on the left or the right which is used to define a group of similarity indices on individual tables. This is known as static analysis in the second stage, we suggest a new critiria which allows us to determine the subspace where trajectories are represented. This critiria is also defined taking the order structure of time into considerations. We call this dynamic analysis. This thesis concludes by anamysing two examples of evolutive data using two methods, the one we developed and the statis method. A comparison of the obtained results using the two methods is given
Mansiaux, Yohann. „Analyse d'un grand jeu de données en épidémiologie : problématiques et perspectives méthodologiques“. Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066272/document.
Der volle Inhalt der QuelleThe increasing size of datasets is a growing issue in epidemiology. The CoPanFlu-France cohort(1450 subjects), intended to study H1N1 pandemic influenza infection risk as a combination of biolo-gical, environmental, socio-demographic and behavioral factors, and in which hundreds of covariatesare collected for each patient, is a good example. The statistical methods usually employed to exploreassociations have many limits in this context. We compare the contribution of data-driven exploratorymethods, assuming the absence of a priori hypotheses, to hypothesis-driven methods, requiring thedevelopment of preliminary hypotheses.Firstly a data-driven study is presented, assessing the ability to detect influenza infection determi-nants of two data mining methods, the random forests (RF) and the boosted regression trees (BRT), ofthe conventional logistic regression framework (Univariate Followed by Multivariate Logistic Regres-sion - UFMLR) and of the Least Absolute Shrinkage and Selection Operator (LASSO), with penaltyin multivariate logistic regression to achieve a sparse selection of covariates. A simulation approachwas used to estimate the True (TPR) and False (FPR) Positive Rates associated with these methods.Between three and twenty-four determinants of infection were identified, the pre-epidemic antibodytiter being the unique covariate selected with all methods. The mean TPR were the highest for RF(85%) and BRT (80%), followed by the LASSO (up to 78%), while the UFMLR methodology wasinefficient (below 50%). A slight increase of alpha risk (mean FPR up to 9%) was observed for logisticregression-based models, LASSO included, while the mean FPR was 4% for the data-mining methods.Secondly, we propose a hypothesis-driven causal analysis of the infection risk, with a structural-equation model (SEM). We exploited the SEM specificity of modeling latent variables to study verydiverse factors, their relative impact on the infection, as well as their eventual relationships. Only thelatent variables describing host susceptibility (modeled by the pre-epidemic antibody titer) and com-pliance with preventive behaviors were directly associated with infection. The behavioral factors des-cribing risk perception and preventive measures perception positively influenced compliance with pre-ventive behaviors. The intensity (number and duration) of social contacts was not associated with theinfection.This thesis shows the necessity of considering novel statistical approaches for the analysis of largedatasets in epidemiology. Data mining and LASSO are credible alternatives to the tools generally usedto explore associations with a high number of variables. SEM allows the integration of variables des-cribing diverse dimensions and the explicit modeling of their relationships ; these models are thereforeof major interest in a multidisciplinary study as CoPanFlu
Kolmayer, Elisabeth. „Contribution à l'analyse des processus cognitifs mis en jeu dans l'interrogation d'une base de données documentaires“. Paris 5, 1997. http://www.theses.fr/1997PA05H051.
Der volle Inhalt der QuelleDuring the information retrieval process, two topic representations have to interact; one comes from the end-user, the other from the information system. We focus on this interaction. Cognitive psychology gives some tools to analyse the user's domain representation, as research on categorizations and about expert and novice knowledge has shown. An experimental approach with nurses and nursing auxiliaries analyses the effects of two expertise factors: experience and training level. We examine the domain representation in information system through indexing (indexing with descriptors and subject headings). We point out agreement and differences between knowledge organization such as in thesauri, in subject headings indexes and in the user's mind. But by interacting with an actual retrieval device, topic expertise plays a very small role; the important factor is the expertise of the own device. We focus then on the modelling of the information retrieval situation; the problem to face, for the end-user, is not to find the + best match ; between query and index terms, but to develop a representation of his information need convenient with the information system constraints. An information retrieval task is then concieved as a design problem to which the concepts of plans declarative and procedural- can be applied. An experiment tests the efficiency of such a modelling, analysing the seeking process of end-users and librarians interacting with an online catalog. Some ergonomic consequences are considered
Pipien, Sarah. „A la recherche de quasars à grand décalage spectral dans le sondage CFHQSIR“. Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0376/document.
Der volle Inhalt der QuelleMy PhD work is focused on the search for high-redshift quasars in the Canada France High-z Quasar Survey in the Near Infrared (CFHQSIR). The main scientific objective of this CFHT Large Program is to search for quasars at redshift z $\sim$ 7 with near-infrared images of the CFHTLS Wide fields acquired with the CFHT WIRCam camera. Firstly, I carried out the photometric calibration of the CFHQSIR images. I performed a detailed analysis of the CFHQSIR data by studying their quality, as well as their noise properties and their depths.Secondly, I computed the number of high-redshift quasars that could be detected with CFHQSIR and the corresponding constraints which could be put on the z $\sim$ 7 quasar luminosity function. Then, I proceeded to the identification of quasar candidates among the many thousands of sources in the 130 square degrees covered by CFHQSIR. Photometric follow-up observations of the candidates revealed about fifty objects, of which fifteen were chosen to be spectroscopically observed with the Very Large Telescope (VLT). Given that this spectroscopic follow-up is not yet completed, the exact nature of these sources will only be known in the coming months. To finish, I applied Bayesian model comparison to my sample in order to complete and consolidate my selection procedure. My candidates were finally classified according to their probability to be a high-redshift quasar. I verified that the majority of the most likely candidates were selected for spectroscopic observations
Bernard, Luc. „Développement d'un jeu de structures de données et de contraintes sémantiques pour la compilation(séparée) du langage ADA“. Doctoral thesis, Universite Libre de Bruxelles, 1985. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213624.
Der volle Inhalt der QuellePonzano, Matteo. „Prévisibilité des épisodes méditerranéens de pluies intenses à l'aide d'un jeu de données de 30 ans de prévisions rétrospectives“. Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30329.
Der volle Inhalt der QuelleThe French Mediterranean region is prone to very intense flash-flood events induced by heavy precipitation events (HPEs), which are responsible for considerable human and material damage. Quantitative precipitation forecasts have improved dramatically in recent years towards quasi-realistic rainfall estimations. Nevertheless, the proper estimation of the uncertainty associated with the physical processes representation remains a challenging issue. In this thesis, we address the predictability of intense precipitation in the French Mediterranean region using a 30-year ensemble hindcast dataset based on the ensemble prediction system PEARP, operational at Météo-France. This reforecast system implements the same model error as PEARP, but initial and boundary conditions are differently assessed. In order to assess the ability of the reforecast to represent the errors of the original model, we first verify this reforecast using some verification scores. The lack of initial condition perturbation makes the ensemble spread of the reforecast lower than the PEARP's one. Though probabilistic forecast scores are weak due to these set-up deficiencies, some skills are observed at 4-days lead time and for very large thresholds. However, the duration of the reforecast dataset and the resolution inherited from the operational model seem to provide enough complexity to the rainfall reforecast distributions. Two post-processing methods, based on quantile mapping and extended logistic regression techniques, are applied to the reforecast. The quantile mapping approach reduces the members biases, but the benefits in terms of probabilistic scores are lower than expected. The calibration procedure using the extended logistic regression approach leads to better probabilistic scores, both for low and large precipitation thresholds. The extended logistic regression fitted on the reforecast as a learning dataset is then applied on the operational ensemble system PEARP over a 4-month period. Though calibrated forecasts skills are not globally improved, some high probability thresholds are slightly improved, suggesting such methodology could be finally efficiently tuned. The last part of this thesis further investigates systematic errors of intense precipitation forecasting using the feature-based metric SAL (Wernli et al. (2008)). This spatial metric applied to the reforecast shows that both amplitude and structure components are controlled by deep convection parametrizations. Indeed, between the two main deep convection schemes implemented in the model, one scheme performs better, in particular for the most extreme events. A remarkable aptitude of the model is emphasised as the ranked distribution of the very intense integrated rainfall features is accurately represented by the model
Charneau, Sébastien. „Approches moléculaires des mécanismes mis en jeu en fin de schizogonie intraérythrocytaire de Plasmodium falciparum (agent du paludisme) par hybridation soustractive suppressive et puces à ADN“. Paris, Muséum national d'histoire naturelle, 2005. http://www.theses.fr/2005MNHN0001.
Der volle Inhalt der QuelleThe aim of this work was to study the differentiation of Plasmodium falciparum merozoite through its transcriptome. First, by suppression subtractive hybridization, we have realised a stage-specific cDNA library. We have identified 40 genes specifically expressed during merozoite morphogenesis, some expected as coding for merozoite proteins (27. 5%), the other coding for proteins of unknown function (72. 5%). We have characterized one of these proteins, the dynamin-2-like. Expressed only during schizogony, it could be a key-molecule of the merozoite differentiation and be involved in mitochondrial division. Second, by microarrays, we have identified 10 genes, as yet unreported, whose expression is significantly modulated by rottlerin, a protein kinase inhibitor that stops merozoite differentiation leading to the parasite lysis
Gogolashvili, Davit. „Global and local Kernel methods for dataset shift, scalable inference and optimization“. Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS363v2.pdf.
Der volle Inhalt der QuelleIn many real world problems, the training data and test data have different distributions. The most common settings for dataset shift often considered in the literature are covariate shift and target shift. In this thesis, we investigate nonparametric models applied to the dataset shift scenario. We develop a novel framework to accelerate Gaussian process regression. In particular, we consider localization kernels at each data point to down-weigh the contributions from other data points that are far away, and we derive the GPR model stemming from the application of such localization operation. We propose a new method for estimating the minimizer and the minimum value of a smooth and strongly convex regression function from the observations contaminated by random noise
Danilo, Céline. „Évaluation des courants de surface océanique au moyen d’un radar à ouverture synthétique“. Brest, 2009. http://www.theses.fr/2009BRES2023.
Der volle Inhalt der QuelleThe aim of this thesis is to extract the radar line-of-sight component of sea surface current from the Doppler shift of a signal received by a synthetic aperture radar on board of ENVISAT. The primary goals of this work are the separation of waves and surface current components to this Doppler shift and, furthermore, the expansion of this analysis to multiple angles of incidence, thereby making it possible to map sea surface currents. This study is limited to vertical polarization and to the radar frequency hand C. Extraction of current signature is based on the assumption that the Doppler shift is caused solely by surface gravity waves and by surface current. Moreover, we initially assume that the current is uniform within the surface of Doppler shift estimation. Under these assumptions, the current component can be deduced from the Doppler shift by substracting the wave component. The latter have relatively short wavelengths, which is typical of wind-sea. Practical use of 10 m wind information for the estimation of waves component is evaluated. A method for extracting surface current information is developed and tested, initially for a constant incidence angle of 23°, on small-sized and isolated ocean images from all over the oceans. A comparison of the monthly average speeds, obtained by on-site current measurements, indicates an RMS error of 0. 35 m/s. As a further step, the same methodology is applied for larger acquisitions (400 km by 400 km minimum) for which the incidence angle ranges from 16 to 42°, This new configuration requires a preliminary analysis of the effect of incidence angle variation on the Doppler shift. We show that an increase of the angle of incidence results in the increase of the relative component of surface current to the Doppler shift, and that the latter also varies according to the direction of wind with respect to the direction of the radar. The estimated surface current component shows a good quantitative correspondence with the same component measured by on-site sensors. This result is encouraging in view of the development of a more systematic technique. Finally, the last part of this work is devoted to a more complex case, namely that of coastal current: here, the hypothesis of a uniform surface current within the estimation surface cannot be maintained anymore due to the great variability of these currents. In this case, we proceed by analyzing maps of Doppler shift of a 1 km resolution. Despite the complexity of this situation, once again, the comparison between Doppler shift-derived velocities and data from tidal current maps indicates a strong potential of SAR images to return high resolution information on surface currents
Bücher zum Thema "Décalage de jeu de données"
Cellule d'étude de politique économique (Guinea), Hrsg. L'accord general sur le commerce des services: Les données du jeu pour la Guinée. Conakry: Cellule d'étude de politique économique, 2004.
Den vollen Inhalt der Quelle findenJet lag and travel: A specialized bibliography from the SPORT database = Voyages et problèmes liés au décalage horaire : une bibliographie specialisée de la base de données SPORT. Gloucester, Ont: Sport Information Research Centre, 1991.
Den vollen Inhalt der Quelle findenBuchteile zum Thema "Décalage de jeu de données"
DÉJEAN, Sébastien, und Kim-Anh LÊ CAO. „Modèles multivariés pour l’intégration de données et la sélection de biomarqueurs dans les données omiques“. In Intégration de données biologiques, 211–69. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9030.ch7.
Der volle Inhalt der QuelleRONDOT, Camille. „« Raconte tes données », entre euphémisation, standardisation et poétique du chiffre“. In Analyses des sites web, 269–89. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9103.ch10.
Der volle Inhalt der QuelleDERYCKE, Marc. „Le vivre ensemble en jeu dans une « famille d’accueil »“. In Pratiques de la diversité et de la citoyenneté, 53–64. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5586.
Der volle Inhalt der QuelleBEUGNON, Sébastien, Vincent ITIER und William PUECH. „Tatouage 3D“. In Sécurité multimédia 1, 231–60. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9026.ch7.
Der volle Inhalt der QuelleGARZELLI, Andrea, und Claudia ZOPPETTI. „Analyse multitemporelle d’images Sentinel-1/2 pour le suivi de l’utilisation des sols“. In Détection de changements et analyse des séries temporelles d’images 1, 221–45. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9056.ch8.
Der volle Inhalt der QuelleLafourcade, Mathieu, und Nathalie Lebrun. „Vers un réseau lexico-sémantique de grande taille obtenu par crowdsourcing“. In Le Crowdsourcing, 75–94. Editions des archives contemporaines, 2021. http://dx.doi.org/10.17184/eac.3913.
Der volle Inhalt der QuelleKANE, Ibrahima. „La décentralisation au Sénégal“. In Revue Internationale des Sciences Économiques et Sociales (RISES) No. 4, 125–44. Editions des archives contemporaines, 2024. http://dx.doi.org/10.17184/eac.8160.
Der volle Inhalt der QuelleDEJEAN DE LA BÂTIE, Alice. „A l’aube de l’ère pénale sanitaire“. In Les épidémies au prisme des SHS, 251–55. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.6011.
Der volle Inhalt der QuelleBerichte der Organisationen zum Thema "Décalage de jeu de données"
Larrieu, Maxence. Pour quelles revues et publishers les chercheurs d'une université pluridisciplinaire travaillent-ils ? Université Paris Cité, September 2023. http://dx.doi.org/10.53480/luoj2939.
Der volle Inhalt der QuelleTea, Céline. REX et données subjectives: quel système d'information pour la gestion des risques? Fondation pour une culture de sécurité industrielle, April 2012. http://dx.doi.org/10.57071/170rex.
Der volle Inhalt der QuelleFibbi, Rosita, Leonie Mugglin, Lisa Iannello, Andrea Bregoli, Philippe Wanner, Didier Ruedin, Denise Efionayi-Mäder und Marta Marques. « Que des locataires ! » : participation politique des résident·e·s espagnols et portugais à Genève et Neuchâtel. Université de Neuchâtel - Swiss Forum for Migration and Population Studies (SFM), 2023. http://dx.doi.org/10.35662/unine-sfmstudies-83.
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