Academic literature on the topic 'Qualité des données et bruit'
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Journal articles on the topic "Qualité des données et bruit":
Brahmi, Ghanem, and Mohammed Bougara. "Atténuation du ground roll par le filtre surface wave atténuation : application pour le cas des données sismiques." Boletín de Ciencias de la Tierra, no. 52 (January 22, 2023): 29–36. http://dx.doi.org/10.15446/rbct.105227.
Mercier de Lépinay, Jeanne, Baptiste Kiemes, Gwendal Deneux, Luis Miguel Sanabria, and Tristan Fréville. "Levé opérationnel de magnétisme en drone couplé à un levé photogrammétrique à des fins de dépollution pyrotechnique." E3S Web of Conferences 342 (2022): 02001. http://dx.doi.org/10.1051/e3sconf/202234202001.
PLOTARD, Christophe, Sylvain MOULHERAT, Catherine De ROINCÉ, and Jérémie CORNUAU. "Prendre en compte la pollution sonore dans une modélisation de dynamiques de populations d’espèces." Sciences Eaux & Territoires, no. 43 (October 8, 2023): 43–47. http://dx.doi.org/10.20870/revue-set.2023.43.7512.
Fortier, Céline, and Ronald Raby. "Évaluation de la qualité des données par âge et sexe du recensement canadien de 1986." Articles 18, no. 2 (March 25, 2004): 285–322. http://dx.doi.org/10.7202/010018ar.
Amankwah, Nana, Maryam Oskoui, Rochelle Garner, Christina Bancej, Douglas G. Manuel, Ron Wall, Philippe Finès, Julie Bernier, Karen Tu, and Kim Reimer. "La paralysie cérébrale au Canada, 2011-2031 : résultats d’une étude de modélisation par microsimulation des répercussions épidémiologiques et économiques." Promotion de la santé et prévention des maladies chroniques au Canada 40, no. 2 (February 2020): 27–40. http://dx.doi.org/10.24095/hpcdp.40.2.01f.
Ndaye, François Ntumba, Salvius Bakari Amuri, Cedrick Mutombo Shakalenga, John Tshomba Kalumbu, Augustin Nge Okwe, Jules Nkulu Mwine Fyama, and Pierre Duez. "Contribution à l’Analyse du Marché des Plantes Médicinales dans la Région de Lubumbashi, RD Congo : Acteurs et Enjeux Socio-Économiques." European Scientific Journal, ESJ 20, no. 7 (March 31, 2024): 180. http://dx.doi.org/10.19044/esj.2024.v20n7p180.
Duroudier, S., S. Chardonnel, B. Mericskay, I. Andre-Poyaud, O. Bedel, S. Depeau, T. Devogele, et al. "Diagnostic qualité et apurement des données de mobilité quotidienne issues de l’enquête mixte et longitudinale Mobi’Kids." Revue Internationale de Géomatique 30, no. 1-2 (January 2020): 127–48. http://dx.doi.org/10.3166/rig.2020.00105.
Plante, Katherine, and Marc Gervais. "La Garantie de Qualité des Données Géospatiales." GEOMATICA 69, no. 1 (March 2015): 7–27. http://dx.doi.org/10.5623/cig2015-101.
Maday, Charlotte. "Qualité des données et Open data." I2D - Information, données & documents 53, no. 4 (2016): 58. http://dx.doi.org/10.3917/i2d.164.0058.
LE MOAL, M. "Qualifier la qualité des données localisées numériques des réseaux d’eau et d’assainissement." Techniques Sciences Méthodes 11 (November 20, 2019): 51–64. http://dx.doi.org/10.36904/tsm/201911051.
Dissertations / Theses on the topic "Qualité des données et bruit":
Azé, Jérôme. "Extraction de Connaissances à partir de Données Numériques et Textuelles." Phd thesis, Université Paris Sud - Paris XI, 2003. http://tel.archives-ouvertes.fr/tel-00011196.
L'analyse de telles données est souvent contrainte par la définition d'un support minimal utilisé pour filtrer les connaissances non intéressantes.
Les experts des données ont souvent des difficultés pour déterminer ce support.
Nous avons proposé une méthode permettant de ne pas fixer un support minimal et fondée sur l'utilisation de mesures de qualité.
Nous nous sommes focalisés sur l'extraction de connaissances de la forme "règles d'association".
Ces règles doivent vérifier un ou plusieurs critères de qualité pour être considérées comme intéressantes et proposées à l'expert.
Nous avons proposé deux mesures de qualité combinant différents critères et permettant d'extraire des règles intéressantes.
Nous avons ainsi pu proposer un algorithme permettant d'extraire ces règles sans utiliser la contrainte du support minimal.
Le comportement de notre algorithme a été étudié en présence de données bruitées et nous avons pu mettre en évidence la difficulté d'extraire automatiquement des connaissances fiables à partir de données bruitées.
Une des solutions que nous avons proposée consiste à évaluer la résistance au bruit de chaque règle et d'en informer l'expert lors de l'analyse et de la validation des connaissances obtenues.
Enfin, une étude sur des données réelles a été effectuée dans le cadre d'un processus de fouille de textes.
Les connaissances recherchées dans ces textes sont des règles d'association entre des concepts définis par l'expert et propres au domaine étudié.
Nous avons proposé un outil permettant d'extraire les connaissances et d'assister l'expert lors de la validation de celles-ci.
Les différents résultats obtenus montrent qu'il est possible d'obtenir des connaissances intéressantes à partir de données textuelles en minimisant la sollicitation de l'expert dans la phase d'extraction des règles d'association.
Al, Jurdi Wissam. "Towards next generation recommender systems through generic data quality." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCD005.
Recommender systems are essential for filtering online information and delivering personalized content, thereby reducing the effort users need to find relevant information. They can be content-based, collaborative, or hybrid, each with a unique recommendation approach. These systems are crucial in various fields, including e-commerce, where they help customers find pertinent products, enhancing user experience and increasing sales. A significant aspect of these systems is the concept of unexpectedness, which involves discovering new and surprising items. This feature, while improving user engagement and experience, is complex and subjective, requiring a deep understanding of serendipitous recommendations for its measurement and optimization. Natural noise, an unpredictable data variation, can influence serendipity in recommender systems. It can introduce diversity and unexpectedness in recommendations, leading to pleasant surprises. However, it can also reduce recommendation relevance, causing user frustration. Therefore, it is crucial to design systems that balance natural noise and serendipity. Inconsistent user information due to natural noise can negatively impact recommender systems, leading to lower-quality recommendations. Current evaluation methods often overlook critical user-oriented factors, making noise detection a challenge. To provide powerful recommendations, it’s important to consider diverse user profiles, eliminate noise in datasets, and effectively present users with relevant content from vast data catalogs. This thesis emphasizes the role of serendipity in enhancing recommender systems and preventing filter bubbles. It proposes serendipity-aware techniques to manage noise, identifies algorithm flaws, suggests a user-centric evaluation method, and proposes a community-based architecture for improved performance. It highlights the need for a system that balances serendipity and considers natural noise and other performance factors. The objectives, experiments, and tests aim to refine recommender systems and offer a versatile assessment approach
Tiouchichine, Elodie. "Performance du calorimètre à argon liquide et recherche du boson de Higgs dans son canal de désintégration H -->ZZ*->4l avec l'expérience ATLAS auprès du LHC." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4058/document.
The work presented in this thesis within the ATLAS collaboration was performed in the context of the discovery of a new particle at the LHC in the search for the Standard Model Higgs boson. My contribution to the Higgs boson search is focused in the H -> ZZ* -> 4 l channel at different level, from the data taking to the physics analysis. After a theoretical introduction, the LHC and the ATLAS detector are presented as well as their performance during the 2011 and 2012 runs. A particular consideration is given to the liquid argon calorimeters and to the data quality assesment of this system. The validation of the data recorded during non-nominal high voltage conditions is presented. This study allowed to recover 2% of the data collected available for physics analyses. This has a direct impact on the H -> ZZ* -> 4 l channel were the number of signal events expected is very low. In order to optimize the acceptance of the four electrons decay channel, novel electron reconstruction algorithms were introducted in 2012. The measurement of their efficiency is presented. The efficiency gain reaching 7% for low transverse energy electrons (15 ZZ* -> 4 l analysis presented using the data recorded in 2012. The reducible background estimation methods in the channels containing electrons in the final state that were of primary importance after the discovery are detailed. Finally, the measurement of the new boson properties are presented based on the 2011 and the 2012 recorded data
Choquet, Rémy. "Partage de données biomédicales : modèles, sémantique et qualité." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00824931.
Ben, salem Aïcha. "Qualité contextuelle des données : détection et nettoyage guidés par la sémantique des données." Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCD054/document.
Nowadays, complex applications such as knowledge extraction, data mining, e-learning or web applications use heterogeneous and distributed data. The quality of any decision depends on the quality of the used data. The absence of rich, accurate and reliable data can potentially lead an organization to make bad decisions.The subject covered in this thesis aims at assisting the user in its quality ap-proach. The goal is to better extract, mix, interpret and reuse data. For this, the data must be related to its semantic meaning, data types, constraints and comments.The first part deals with the semantic schema recognition of a data source. This enables the extraction of data semantics from all the available information, inculding the data and the metadata. Firstly, it consists of categorizing the data by assigning it to a category and possibly a sub-category, and secondly, of establishing relations between columns and possibly discovering the semantics of the manipulated data source. These links detected between columns offer a better understanding of the source and the alternatives for correcting data. This approach allows automatic detection of a large number of syntactic and semantic anomalies.The second part is the data cleansing using the reports on anomalies returned by the first part. It allows corrections to be made within a column itself (data homogeni-zation), between columns (semantic dependencies), and between lines (eliminating duplicates and similar data). Throughout all this process, recommendations and analyses are provided to the user
Weber-Baghdiguian, Lexane. "Santé, genre et qualité de l'emploi : une analyse sur données microéconomiques." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLED014/document.
This thesis studies the influence of work on job and life quality, the latter being considered through the perception that individuals have of their own health. The first chapter focuses on the long-term effects of job losses due to plant closure on job quality. We show that job loss negatively affects wages, perceived job insecurity, the quality of the working environment and job satisfaction, including in the long run. The two last chapters investigate gender differences in self-reported health. The second chapter provides descriptive evidence on the relationships between self-assessed health, gender and mental health problems, i.e. depression and/or affective pains. Finally, in the last chapter, we study the influence of social norms as proxied by the gender structure of the workplace environment, on gender differences in self-reported health. We show that both women and men working in female-dominated environments report more specific health problems than those who work in male-dominated environments. The overall findings of this thesis are twofold. First, losing a job has a negative impact on several dimensions of job quality and satisfaction in the long run. Secondly, mental diseases and social norms at work are important to understand gender-related differences in health perceptions
Puricelli, Alain. "Réingénierie et Contrôle Qualité des Données en vue d'une Migration Technologique." Lyon, INSA, 2000. http://theses.insa-lyon.fr/publication/2000ISAL0092/these.pdf.
The purpose of this thesis is to develop a methodology of treatment for logical consistency checking in a Geographical Information System (GIS), in order to ensure the migration of the data in the case of a technological change of system and re-structuring. This methodology is then applied to a real GIS installed in the Urban Community of Lyon (the SUR). Logical consistency is one of the quality criteria that are commonly allowed within the community of producers and users of geographical data, as well as precision or exhaustiveness for instance. After a presentation of the elements of quality and metadata in GIS, a state of the art is given concerning various works of standardization within these fields. The different standards under development (those of the CEN, the ISO and the FGDC among others) are analyzed and commented. A methodology of detection and correction of geometrical and topological errors is then detailed, within the framework of existing geographical vector databases. Three types of errors are identified, namely structural, geometrical and semantic errors. For each one of these families of errors, methods of detection based on established theories (integrity constraints, topology and computational geometry) are proposed as well ideas for the correction are detailed. This approach is then implemented within the context of the SUR databases. To complete this application, a specific mechanism was developed to deal also with the errors in tessellations, which were not taken into account by the methodology (which uses binary topological relations). Finally to ensure the consistency of the corrections, a method was set up to spread the corrections in the neighborhood of the objects under corrections. Those objects can be located inside a single layer of data as well as between different layers or different databases of the system
Defréville, Boris. "Caractérisation de la qualité sonore de l'environnement urbain : une approche physique et perceptive basée sur l'identification des sources sonores." Cergy-Pontoise, 2005. http://biblioweb.u-cergy.fr/theses/05CERG0275.pdf.
Noise in cities is perceived as a question of quality of life. It is generally evaluated by the measurement of his sound level. If this measure is representative of noisy environments which are characterised by continuous flow of vehicles, it is insufficient to characterise the "colour" of a urban soundscape where different sources coexist. The first part reveals that sound sources are not perceived the same manner and their metrological evaluation should be adapted consequently. This present work proposes an indicator linked to the unpleasantness of sound. Depending on the place it describes, this indicator sometimes uses the loudness of the sequence but always takes account characteristics of emergent sound of sources. The second part of the study proposes two methods for the automatic calculation of this indicator thanks to the identification of sound sources. This tool represents, in fine, a help to the management of an urban soundscape
Feno, Daniel Rajaonasy. "Mesures de qualité des règles d'association : normalisation et caractérisation des bases." Phd thesis, Université de la Réunion, 2007. http://tel.archives-ouvertes.fr/tel-00462506.
Bazin, Cyril. "Tatouage de données géographiques et généralisation aux données devant préserver des contraintes." Caen, 2010. http://www.theses.fr/2010CAEN2006.
Digital watermaking is a fundamental process for intellectual property protection. It consists in inserting a mark into a digital document by slightly modifications. The presence of this mark allows the owner of a document to prove the priority of his rights. The originality of our work is twofold. In one hand, we use a local approach to ensure a priori that the quality of constrained documents is preserved during the watermark insertion. On the other hand, we propose a generic watermarking scheme. The manuscript is divided in three parts. Firstly, we introduce the basic concepts of digital watermarking for constrainted data and the state of the art of geographical data watermarking. Secondly, we present our watermarking scheme for digital vectorial maps often used in geographic information systems. This scheme preserves some topological and metric qualities of the document. The watermark is robust, it is resilient against geometric transformations and cropping. We give an efficient implementation that is validated by many experiments. Finally, we propose a generalization of the scheme for constrainted data. This generic scheme will facilitate the design of watermarking schemes for new data type. We give a particular example of application of a generic schema for relational databases. In order to prove that it is possible to work directly on the generic scheme, we propose two detection protocols straightly applicable on any implementation of generic scheme
Books on the topic "Qualité des données et bruit":
Institut canadien d'information sur la santé., ed. Processus d'assurance de la qualité relatifs à la Base de données sur les congés des patients et à la Base de données sur la morbidité hospitalière. Ottawa, Ont: Institut canadien d'information sur la santé, 2002.
Canada. Ministère de l'environnement. Direction générale des eaux intérieures et des terres. Système Informatisé de Saisie et de Gestion de Données D'analyse de la Qualité de L'eau en Laboratoire (Awqualabs). S.l: s.n, 1987.
Organisation for economic co-operation and development. Evaluation et processus de décision dans l'enseignement supérieur: Expériences en Allemagne, Espagne et France. Paris: OCDE, 1994.
terres, Canada Ministère de l'environnement Direction générale des eaux intérieures et des. Expérience Acquise Durant la Conception, L'élaboration et la Mise en Application D'un Système Informatisé de Saisie et de Gestion de Données Pour un Laboratoire D'analyse de la Qualité de L'eau. S.l: s.n, 1987.
Book chapters on the topic "Qualité des données et bruit":
Campillo-Gimenez, Boris, Marc Cuggia, Anita Burgun, and Pierre Le Beux. "La qualité des données médicales dans les dossiers patient de deux services d’accueil des urgences avant et après informatisation." In Informatique et Santé, 331–42. Paris: Springer Paris, 2011. http://dx.doi.org/10.1007/978-2-8178-0285-5_29.
Akoka, Jacky. "Chapitre 1. Covid-19 : qualité des données et données de qualité." In Crise de la connaissance et connaissance de la crise, 23–31. EMS Editions, 2022. http://dx.doi.org/10.3917/ems.cappe.2022.01.0023.
CHARPENTIER, Philippe. "Algorithmes en physique des particules." In Algorithmes et Société, 111–18. Editions des archives contemporaines, 2021. http://dx.doi.org/10.17184/eac.4548.
FLEURY SOARES, Gustavo, and Induraj PUDHUPATTU RAMAMURTHY. "Comparaison de modèles d’apprentissage automatique et d’apprentissage profond." In Optimisation et apprentissage, 153–71. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9071.ch6.
REBOUILLAT, Violaine, and Joachim SCHÖPFEL. "Le dispositif d’entrepôt de données de recherche." In Partage et valorisation des données de la recherche, 7–37. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9073.ch1.
SCHÖPFEL, Joachim. "Le paysage des entrepôts de données de recherche en France." In Partage et valorisation des données de la recherche, 39–55. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9073.ch2.
Mangeot, Mathieu, and 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.
SCHÖPFEL, Joachim. "Enjeux et perspectives des entrepôts de données de recherche." In Partage et valorisation des données de la recherche, 231–50. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9073.ch12.
BURNAT, P., A. HOULGATTE, and S. AUSSET. "Indicateurs de valorisation des publications scientifiques." In Médecine et Armées Vol. 44 No.3, 235–41. Editions des archives contemporaines, 2016. http://dx.doi.org/10.17184/eac.6812.
Razafindratsima, Nicolas. "La qualité des données : constitution de l'échantillon et conduite des entretiens." In Enquête sur la sexualité en France, 77–96. La Découverte, 2008. http://dx.doi.org/10.3917/dec.bajos.2008.01.0077.
Reports on the topic "Qualité des données et bruit":
Kaboré, Gisele, and Idrissa Kabore. Analyse secondaire des données de l'analyse situationnelle des services de santé de la reproduction. Population Council, 2009. http://dx.doi.org/10.31899/pgy20.1000.
Bourassa Forcier, Mélanie, Derek Dumont, and Hugo Prevosto. Les résidences privées pour aînés (RPA) au Québec : enjeux et opportunités. CIRANO, May 2024. http://dx.doi.org/10.54932/juaj9460.
Meunier, Valérie, and Eric Marsden. Analyse coût-bénéfices: guide méthodologique. Fondation pour une culture de sécurité industrielle, December 2009. http://dx.doi.org/10.57071/492acb.
Goerzen, C., H. Kao, R. Visser, R. M. H. Dokht, and S. Venables. A comprehensive earthquake catalogue for northeastern British Columbia, 2021 and 2022. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332532.
Étude de faisabilité d’un service générique d’accueil et de diffusion des données simples : recueil des besoins et des contraintes des usagers. Ministère de l'enseignement supérieur et de la recherche, November 2020. http://dx.doi.org/10.52949/13.
Introduction à l’analyse de données avec R. Instats Inc., 2023. http://dx.doi.org/10.61700/ypko7xoekebon469.
Introduction à l’analyse de données avec R. Instats Inc., 2023. http://dx.doi.org/10.61700/o6naentazfo73469.
Comment mesurer l’impact du changement de comportement des prestataires. Population Council, January 2023. http://dx.doi.org/10.31899/sbsr2023.1027.
Gestion de la pandémie de COVID-19 - Analyse de la dotation en personnel dans les centres d'hébergement de soins de longue durée du Québec au cours de la première vague. CIRANO, June 2023. http://dx.doi.org/10.54932/fupo1664.