Letteratura scientifica selezionata sul tema "Correction de biais en ligne"
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Articoli di riviste sul tema "Correction de biais en ligne"
Joubert, Léo, Olivier Lê Van Truoc, Pierre Mercklé e Benoît Tudoux. "Redresser l’échantillon d’une enquête en ligne : un exemple à partir de l’enquête Vico". Bulletin of Sociological Methodology/Bulletin de Méthodologie Sociologique 158, n. 1 (aprile 2023): 143–66. http://dx.doi.org/10.1177/07591063231160287.
Testo completoDitchev, Ivaylo, e Anne-Hélène Kerbiriou. "Des passions nationales virtualisées". Anthropologie et Sociétés 40, n. 1 (18 maggio 2016): 71–84. http://dx.doi.org/10.7202/1036371ar.
Testo completoGardhouse, Christine, Matt Hurst, Sujani Sivanantharajah e Nadia Ciampa. "Utilisation d’un sondage en ligne pour la collecte de renseignements sur l’exposition aux aliments, sous-étude Foodbook, de février à avril 2015". Relevé des maladies transmissibles au Canada 47, n. 1 (29 gennaio 2021): 27–34. http://dx.doi.org/10.14745/ccdr.v47i01a05f.
Testo completoAllaire, Stéphane, e Christine Hamel. "L’échafaudage du discours collaboratif en ligne d’enseignants dans un contexte de développement professionnel formel". Articles 44, n. 3 (8 giugno 2010): 467–87. http://dx.doi.org/10.7202/039950ar.
Testo completoArribas Sebastián, Ana. "Sahrawi women in the diaspora". L’Ouest Saharien Vol. 18, n. 1 (18 luglio 2023): 133–53. http://dx.doi.org/10.3917/ousa.231.0133.
Testo completoMartínez Agudelo, Laura Sofía. "Dispositifs numériques: profils d’usage et modes de s’approprier un lieu". Sintaxis, n. 12 (15 gennaio 2024): 29–41. http://dx.doi.org/10.36105/stx.2024n12.04.
Testo completoO'Connor, B. H., D. Y. Li e H. Sitepu. "Strategies for Preferred Orientation Corrections in Xray Powder Diffraction Using Line Intensity Ratios". Advances in X-ray Analysis 34 (1990): 409–15. http://dx.doi.org/10.1154/s0376030800014725.
Testo completoMezdaout, Hacina. "Enseignement en ligne et interactivité dans l’enseignement supérieur durant le covid-19". Verbum et Lingua, n. 18 (30 giugno 2021): 61–71. http://dx.doi.org/10.32870/vel.vi18.160.
Testo completoJean-Amans, Carole, e Mahamat Abdellatif. "L’influence du risque pays et de la distance culturelle sur les modes de présence et de contrôle des PME à l’étranger". Management international 18, n. 1 (31 gennaio 2014): 73–86. http://dx.doi.org/10.7202/1022221ar.
Testo completoBlondel, Serge, e Ngoc-Thao Noet. "Quels facteurs expliquent la faible coopération en horticulture ?" Revue économique Vol. 74, n. 5 (4 gennaio 2024): 861–88. http://dx.doi.org/10.3917/reco.745.0861.
Testo completoTesi sul tema "Correction de biais en ligne"
Balhane, Saloua. "Improving the dynamical downscaling over Morocco in the context of climate change". Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAX105.
Testo completoMorocco is one of the most vulnerable regions to climate change. Its climate is characterized by complex interactions between various geographical features, including the Atlantic Ocean, the Mediterranean Sea, the High Atlas Mountains, and the Sahara Desert. Understanding the spatiotemporal variability of climatic patterns in this region is crucial for effective climate change adaptation strategies, natural resource management, and sustainable development planning. Global climate models (GCMs) play a significant role within this context, as they are the only models to take into account all the water and energy reservoirs, including slow-moving reservoirs such as the oceans, which modulate the climate and its evolution. Yet, global climate models are still subject to systematic biases that constrain their performance and have generally coarse resolutions, limiting the assessment of local climate patterns. Regional climate models can improve the representation of certain processes (orographic processes, breezes, etc.). They do, however, have flaws that can significantly alter the credibility of climate change trajectories, as it is impossible to distinguish the impact of systematic biases in the forcing GCMs from the role of better small-scale description.This work explores different ways of overcoming these limitations.In the first part, we evaluate a range of different widely used high-resolution ensembles issued from statistical (NEXGDDP) and dynamical (Euro-CORDEX and bias-adjusted Euro-CORDEX) downscaling while investigating the potential added value that “a posteriori'' bias adjustment may have on the simulation of mean and extreme precipitation and temperature over Morocco.In the second part, we use the LMDZ model, the atmospheric component of the latest version of the IPSL model (IPSLCM6), in a coupled configuration with the ORCHIDEE land-surface model. We designed a refined-grid configuration of the model adapted for regional studies over Morocco that is numerically stable enough for running climate change simulations and allows i) a high resolution over the region and ii) a sufficient resolution on the outside of the zoom area to reproduce large-scale patterns. To deal with the systematic large-scale dynamical biases, a run-time bias correction approach, which consists of bias-correcting the systematic errors in large-scale atmospheric variables using the statistics of a nudged simulation towards climate reanalysis, is used. This method allows for high resolution at a moderate computational cost without compromising the coherence between the global and regional climates. Indeed, preserving this coherence is crucial for Morocco since large-scale circulation patterns play a vital role in shaping regional climate patterns in the region.The evaluation of the present climate (1979–2014) has shown significant improvements after grid refinement, particularly in the mean general circulation. The free refined-grid run compares favorably to precipitation and temperature observations at the local scale. The mean climate is considerably improved after bias correction compared to the uncorrected simulations, and improvements in moisture transport, precipitation and air temperature are observed.For future climate, sea surface temperature (SST) and sea ice concentration (SIC) deduced from four coupled CMIP6 models, forced by greenhouse gases and aerosols corresponding to the Shared Socioeconomic Pathway-8.5 (SSP-8.5) scenario, are used to force the corrected regional configuration of LMDZ6-OR. Twenty-year simulations are produced for a global warming level of 3 Kelvin to assess the response of mean regional climate, precipitation and temperature to changes in SST and SIC
Gelperowic, Céline. "Méthodes de discrimination : comparaison et correction des biais de présélection des échantillons". Paris 9, 2000. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2000PA090013.
Testo completoTrinquart, Ludovic. "Impact, détection et correction du biais de publication dans la méta-analyse en réseau". Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05S025/document.
Testo completoNetwork meta-analysis (NMA), a generalization of conventional MA, allows for assessing all possible pairwise comparisons between multiple treatments. Reporting bias, a major threat to the validity of MA, has received little attention in the context of NMA. We assessed the impact of reporting bias empirically using data from 74 FDA-registered placebo-controlled trials of 12 antidepressants and their 51 matching publications. We showed how reporting bias biased NMA-based estimates of treatments efficacy and modified ranking. The effect of reporting bias in NMAs may differ from that in classical meta-analyses in that reporting bias affecting only one drug may affect the ranking of all drugs. Then, we extended a test to detect reporting bias in network of trials. It compares the number of expected trials with statistically significant results to the observed number of trials with significant p-values across the network. We showed through simulation studies that the test was fairly powerful after adjustment for size, except when between-trial variance was substantial. Besides, it showed evidence of bias in the network of published antidepressant trials. Finally, we introduced two methods of sensitivity analysis for reporting bias in NMA: a meta-regression model that allows the effect size to depend on its standard error and a selection model that estimates the propensity of trial results being published and in which trials with lower propensity are weighted up in the NMA model. We illustrated their use on the antidepressant datasets. The proposed test and adjustment models borrow strength from all trials across the network, under the assumption that conventional MAs in the network share a common mean bias mechanism
Robin, Yoann. "Transport optimal pour quantifier l'évolution d'un attracteur climatique et corriger ses biais". Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS071/document.
Testo completoThe climate system generates a strange attractor, described by a probability distribution, called the SRB measure (Sinai-Ruelle-Bowen). This measure describes the state and dynamic of the system. The goal of this thesis is first, to quantify the modification of this measure when climate changes. For this, the Wasserstein distance, stemming from the optimal transport theory, allows us determine accurately the differences between probability distributions. Used on a non-autonomous Lorenz toy model, this metric allows us to detect and quantify the alteration due to a forcing similar to anthropogenic forcing. This methodology has been applied to simulation of RCP scenarios from the IPSL model. The results are coherent with different scenarios. Second, the optimal transport gives a theoretical context for stationary bias correction: a bias correction method is equivalent to a joint probability law. A specific joint law is selected with the Wasserstein distance (Optimal Transport Correction method, OTC). This approach allows us extending bias correction methods in any dimension, correcting spatial and inter-variables dependences. An extension in the non-stationary context has been also developed (dynamical OTC method, dOTC). Those two methods have been tested in an idealized case, based on a Lorenz model, and on climate dataset (a regional climate simulation corrected with respect to the SAFRAN reanalysis)
Aligné, Thomas. "Assimilation variationnelle des observations de sondeurs infrarouges hyperspectraux : correction de biais et la détection nuageuse". Toulouse 3, 2007. http://www.theses.fr/2007TOU30038.
Testo completoTran, Van-Tinh. "Selection Bias Correction in Supervised Learning with Importance Weight". Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1118/document.
Testo completoIn the theory of supervised learning, the identical assumption, i.e. the training and test samples are drawn from the same probability distribution, plays a crucial role. Unfortunately, this essential assumption is often violated in the presence of selection bias. Under such condition, the standard supervised learning frameworks may suffer a significant bias. In this thesis, we address the problem of selection bias in supervised learning using the importance weighting method. We first introduce the supervised learning frameworks and discuss the importance of the identical assumption. We then study the importance weighting framework for generative and discriminative learning under a general selection scheme and investigate the potential of Bayesian Network to encode the researcher's a priori assumption about the relationships between the variables, including the selection variable, and to infer the independence and conditional independence relationships that allow selection bias to be corrected.We pay special attention to covariate shift, i.e. a special class of selection bias where the conditional distribution P(y|x) of the training and test data are the same. We propose two methods to improve importance weighting for covariate shift. We first show that the unweighted model is locally less biased than the weighted one on low importance instances, and then propose a method combining the weighted and the unweighted models in order to improve the predictive performance in the target domain. Finally, we investigate the relationship between covariate shift and the missing data problem for data sets with small sample sizes and study a method that uses missing data imputation techniques to correct the covariate shift in simple but realistic scenarios
Robin, Yoann. "Transport optimal pour quantifier l'évolution d'un attracteur climatique et corriger ses biais". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS071.
Testo completoThe climate system generates a strange attractor, described by a probability distribution, called the SRB measure (Sinai-Ruelle-Bowen). This measure describes the state and dynamic of the system. The goal of this thesis is first, to quantify the modification of this measure when climate changes. For this, the Wasserstein distance, stemming from the optimal transport theory, allows us determine accurately the differences between probability distributions. Used on a non-autonomous Lorenz toy model, this metric allows us to detect and quantify the alteration due to a forcing similar to anthropogenic forcing. This methodology has been applied to simulation of RCP scenarios from the IPSL model. The results are coherent with different scenarios. Second, the optimal transport gives a theoretical context for stationary bias correction: a bias correction method is equivalent to a joint probability law. A specific joint law is selected with the Wasserstein distance (Optimal Transport Correction method, OTC). This approach allows us extending bias correction methods in any dimension, correcting spatial and inter-variables dependences. An extension in the non-stationary context has been also developed (dynamical OTC method, dOTC). Those two methods have been tested in an idealized case, based on a Lorenz model, and on climate dataset (a regional climate simulation corrected with respect to the SAFRAN reanalysis)
Moussaoui, Mohamed. "Optimisation de la correction de biais dans le récepteur PIC multi-étages pour le système CDMA". Valenciennes, 2005. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/19958d9e-d214-4166-b25a-481ff9aca6ff.
Testo completoThe complexity of Verdu's optimal receiver for CDMA increases exponentially with the number of users, loading to an unrealistic implementation. In this thesis, we analyze the sub-optimal interference cancellation receiver with multi-stages parallel structure. The parallel nature of the algorithm can be easily exploited in a multiprocessing environment. This makes it extremely attracting for UMTS-TDD. The use of a matched-filter estimator, results in a bias in the estimated amplitude at the second stage output, particularly for heavy system loads. This bias degrades the system performances in term of bit error rate (BER). We propose an original low complexity approach for reducing the bias, in which we don't attenuate the estimated multiple access interference (MAI), as in the partial cancellation method, but we amplify the amplitude of the received signal for each user by a scalar which we call the amplification factor (AF). An analytical study in the synchronous case and by simulation in the asynchronous case was led to determine an optimal value of this amplification factor, in order to minimize the BER. We indicate the performances obtained in a perfect power control case and for uncompensated near-far effects. Then, we propose a structure incorporating this amplification factor in the multi-stage case, and we compare its complexity with that for the partial cancellation solution. Another aspect considered in this thesis is the impact of the decision functions on the performance of the PIC receiver. We thus considered the `null zone' and ` clipping' functions and compared their sensitivity to decision threshold optimization errors
Li, Meng. "Développement de l'expression orale du français chez les apprenants chinois par le biais de l'échange écrit instantané en ligne". Thesis, Limoges, 2020. http://aurore.unilim.fr/theses/nxfile/default/e30e642f-7e77-4c68-a010-2f57edcde34d/blobholder:0/2020LIMO0058.pdf.
Testo completoThis research concerns teaching French as a foreign language. It focuses exclusively on the development of French oral expression skills by way of synchronous text-based online exchange. The research began when the authors noticed that oral expression was a big handicap for Chinese students and that teaching practices in the classroom were insufficient to remedy it. Against this background, we referred to Information and Communication Technologies for Education (ICTE) and asked the question: could ICTE help create a teaching / learning device in order to improve oral activities, complement spoken French teaching, and improve significantly Chinese students’ oral expression skills? To answer this question, this paper focuses on a key pedagogical issue, by reference to the hypothesis that, as an auxiliary method, synchronous text-based online exchange could assist Chinese students majoring in French to improve their speaking skills. Focusing on both key learning theories and teaching information and communication technologies, examining this hypothesis permitted us to analyse the close relationship between written and oral expression in order to improve Chinese students’ oral expression skills. Results of our teaching experiment further confirmed the hypothesis, while also opening up new avenues of reflection on this issue and suggesting future research
Fourati, Mariem. "Étude de la confusion résiduelle et erreur de mesure dans les modèles de régression". Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6983.
Testo completoLibri sul tema "Correction de biais en ligne"
Additions, Bonnes. Cahier d'exercices d'addition des Nombres De 0 à 19: Pour débuter l'addition des Petits Nombres en Ligne, 50 Pages d'additions Avec Correction. Independently Published, 2020.
Cerca il testo completoCapitoli di libri sul tema "Correction de biais en ligne"
Gorman, Sara E., e Jack M. Gorman. "Confirmation Bias". In Denying to the Grave. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199396603.003.0007.
Testo completoJUAN, Nadège. "Dire la différence. Construction discursive de frontières entre variétés diatopiques de l’espagnol dans des discours épilinguistiques de vidéastes". In Langue(s) en mondialisation, 169–78. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5289.
Testo completoClavert, Frédéric. "Patrimoine, _Public History_ et Humanités numériques." In Patrimoine et Humanités numériques, 103–14. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.3595.
Testo completoMangeot, Mathieu, e Mutsuko Tomokiyo. "Contributions et corrections dans le dictionnaire japonais-français jibiki.fr". In Lexique(s) et genre(s) textuel(s) : approches sur corpus, 259–70. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.2922.
Testo completoArun, Shashikant, e Kumar Singh. "ASTRONOMICAL IMAGE PROCESSING USING LINUX". In Futuristic Trends in Physical Sciences Volume 3 Book 1, 366–91. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bkps1ch18.
Testo completoAtti di convegni sul tema "Correction de biais en ligne"
Maruta, Hidenori, Yasuaki Ikeda, Shota Watanabe, Tomokazu Sakashita e Hiroyasu Iwabuki. "Neural Network and Bias Correction Controls for Fast Transient Response of DC-DC Converter". In 2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON). IEEE, 2022. http://dx.doi.org/10.1109/oncon56984.2022.10126877.
Testo completoZhang, HuiRong, Liang Fan, ChengJiu Liao, QiuMei Wang e HuaChao Chen. "A transmission line image defogging algorithm based on improved transmission estimation and color bias correction". In 3rd International Conference on Artificial Intelligence, Automation, and High-Performance Computing (AIAHPC2023), a cura di Dimitrios A. Karras e Simon X. Yang. SPIE, 2023. http://dx.doi.org/10.1117/12.2685351.
Testo completoKao, Wen-Hsing, Yong-Chuan Chang e Chi-Ching Lin. "The Module Design for Critical Dimension Bias Correction of Slanted Line on High Level Large Area Mask". In 2011 4th International Conference on Ubi-Media Computing (U-Media). IEEE, 2011. http://dx.doi.org/10.1109/u-media.2011.65.
Testo completoZaiss, Curtis, e Swavik Spiewak. "Vibration Rectification and Thermal Disturbances in Ultra Precision Inertial Sensors". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65518.
Testo completoEjdfors, Kristian, Erik Falkenberg, Siril Okkenhaug e Magnus Johannesen. "Analysis Guidance for Thruster Assisted Mooring". In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32516-ms.
Testo completoRapporti di organizzazioni sul tema "Correction de biais en ligne"
Amine, Razan, e Fabrizio Santoro. Rendre obligatoires les outils fiscaux numériques en réponse à la Covid : l’exemple d’Eswatini. Institute of Development Studies, aprile 2023. http://dx.doi.org/10.19088/ictd.2023.020.
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