Letteratura scientifica selezionata sul tema "Réseau fédéré"
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Articoli di riviste sul tema "Réseau fédéré"
Saint-Martin, Denis. "Guichet unique et reconfiguration des réseaux de politiques publiques". Articles 20, n. 2-3 (19 novembre 2008): 117–39. http://dx.doi.org/10.7202/040277ar.
Testo completoThomas, Armelle. "Le Réseau de pépinières de revues scientifiques REPÈRES". I2D - Information, données & documents 2, n. 2 (17 novembre 2020): 144–48. http://dx.doi.org/10.3917/i2d.202.0144.
Testo completoRoy, Nicolas. "The Trans Quebec & Maritimes Pipeline Project : The jurisdictional debate in the area of land planning". Les Cahiers de droit 23, n. 1 (12 aprile 2005): 175–247. http://dx.doi.org/10.7202/042493ar.
Testo completoCharrier, Catherine. "Fédérer les réseaux de proximité". Spirale 61, n. 1 (2012): 101. http://dx.doi.org/10.3917/spi.061.0101.
Testo completoFrey, Jeannette. "Suisse : des réseaux multiples fédérés dans le cloud". Réseaux de coopération et bibliothèques, n. 102 (1 luglio 2021): 12–13. http://dx.doi.org/10.35562/arabesques.2641.
Testo completoGréciano, Philippe, e Eva-Martha Eckkrammer. "La recherche franco-allemande à la pointe des alliances d’universités européennes". Allemagne d'aujourd'hui N° 247, n. 1 (26 febbraio 2024): 123–30. http://dx.doi.org/10.3917/all.247.0123.
Testo completoIllivi, Frédéric. "L’appropriation du « sport-santé » par l’instrumentation : l’exemple d’une fédération française omnisports". Staps Pub. anticipées (1 giugno 2023): I90—XXII. http://dx.doi.org/10.3917/sta.pr1.0090.
Testo completoIllivi, Frédéric. "L’appropriation du « sport-santé » par l’instrumentation : l’exemple d’une fédération française omnisports". Staps N° 146, n. 3 (30 settembre 2024): 91–114. http://dx.doi.org/10.3917/sta.146.0091.
Testo completoPITHON-RIVALLAIN, Joséphine, Ambroise BÉCOT, Nicolas BEAUMONT e Olivier DURAND. "Réseau ARBRE - Mieux intégrer les enjeux de biodiversité dans les exploitations agricoles : intérêt d’un accompagnement à plusieurs voix". Sciences Eaux & Territoires, n. 40 (22 giugno 2022): xx. http://dx.doi.org/10.20870/revue-set.2022.40.7070.
Testo completoTeixeira, Ana María Freitas. "La democratisation de l’enseignement superieur au Brésil: Un chemin vers une politique d’excellence?" Encounters in Theory and History of Education 16 (23 novembre 2015): 65–83. http://dx.doi.org/10.24908/eoe-ese-rse.v16i0.5960.
Testo completoTesi sul tema "Réseau fédéré"
Griffier, Romain. "Intégration et utilisation secondaire des données de santé hospitalières hétérogènes : des usages locaux à l'analyse fédérée". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0479.
Testo completoHealthcare data can be used for purposes other than those for which it was initially collected: this is the secondary use of health data. In the hospital context, to overcome the obstacles to secondary use of healthcaree data (data and organizational barriers), a classic strategy is to set up Clinical Data Warehouses (CDWs). This thesis describes three contributions to the Bordeaux University Hospital’s CDW. Firstly, an instance-based, privacy-preserving, method for mapping numerical biology data elements is presented, with an F-measure of 0,850, making it possible to reduce the semantic heterogeneity of data. Next, an adaptation of the i2b2 clinical data integration model is proposed to enable CDW data persistence in a NoSQL database, Elasticsearch. This implementation has been evaluated on the Bordeaux University Hospital’s CDW, showing improved performance in terms of storage and query time, compared with a relational database. Finally, the Bordeaux University Hospital’s CDW environment is presented, with the description of a first CDW dedicated to local uses that can be used autonomously by end users (i2b2), and a second CDW dedicated to federated networks (OMOP) enabling participation in the DARWIN-EU federated network
Leconte, Louis. "Compression and federated learning : an approach to frugal machine learning". Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS107.
Testo completo“Intelligent” devices and tools are gradually becoming the standard, as the implementation of algorithms based on artificial neural networks is experiencing widespread development. Neural networks consist of non-linear machine learning models that manipulate high-dimensional objects and obtain state-of-the-art performances in various areas, such as image recognition, speech recognition, natural language processing, and recommendation systems.However, training a neural network on a device with lower computing capacity can be challenging, as it can imply cutting back on memory, computing time or power. A natural approach to simplify this training is to use quantized neural networks, whose parameters and operations use efficient low-bit primitives. However, optimizing a function over a discrete set in high dimension is complex, and can still be prohibitively expensive in terms of computational power. For this reason, many modern applications use a network of devices to store individual data and share the computational load. A new approach, federated learning, considers a distributed environment: Data is stored on devices and a centralized server orchestrates the training process across multiple devices.In this thesis, we investigate different aspects of (stochastic) optimization with the goal of reducing energy costs for potentially very heterogeneous devices. The first two contributions of this work are dedicated to the case of quantized neural networks. Our first idea is based on an annealing strategy: we formulate the discrete optimization problem as a constrained optimization problem (where the size of the constraint is reduced over iterations). We then focus on a heuristic for training binary deep neural networks. In this particular framework, the parameters of the neural networks can only have two values. The rest of the thesis is about efficient federated learning. Following our contributions developed for training quantized neural network, we integrate them into a federated environment. Then, we propose a novel unbiased compression technique that can be used in any gradient based distributed optimization framework. Our final contributions address the particular case of asynchronous federated learning, where devices have different computational speeds and/or access to bandwidth. We first propose a contribution that reweights the contributions of distributed devices. Then, in our final work, through a detailed queuing dynamics analysis, we propose a significant improvement to the complexity bounds provided in the literature onasynchronous federated learning.In summary, this thesis presents novel contributions to the field of quantized neural networks and federated learning by addressing critical challenges and providing innovative solutions for efficient and sustainable learning in a distributed and heterogeneous environment. Although the potential benefits are promising, especially in terms of energy savings, caution is needed as a rebound effect could occur
Ben, Atia Okba. "Plateforme de gestion collaborative sécurisée appliquée aux Réseaux IoT". Electronic Thesis or Diss., Mulhouse, 2024. http://www.theses.fr/2024MULH7114.
Testo completoFederated Learning (FL) allows clients to collaboratively train a model while preserving data privacy. Despite its benefits, FL is vulnerable to poisoning attacks. This thesis addresses malicious model detection in FL systems for IoT networks. We provide a literature review of recent detection techniques and propose a Secure Layered Adaptation and Behavior framework (FLSecLAB) to fortify the FL system against attacks. FLSecLAB offers customization for evaluating defenses across datasets and metrics. We propose enhanced malicious model detection with dynamic optimal threshold selection, targeting Label-flipping attacks. We present a scalable solution using entropy and an adaptive threshold to detect malicious clients. We explore complex scenarios and propose novel detection against simultaneous Label-flipping and Backdoor attacks. Additionally, we propose an adaptive model for detecting malicious clients, addressing Non-IID data challenges. We evaluate our approaches through various simulation scenarios with different datasets, comparing them to existing approaches. Results demonstrate the effectiveness of our approaches in enhancing various malicious detection performance metrics
Toofanee, Mohammud Shaad Ally. "An innovative ecosystem based on deep learning : Contributions for the prevention and prediction of diabetes complications". Electronic Thesis or Diss., Limoges, 2023. https://aurore.unilim.fr/theses/nxfile/default/656b0a1f-2ff2-49c5-bb3e-f34704d6f6b0/blobholder:0/2023LIMO0107.pdf.
Testo completoIn the year 2021, estimations indicated that approximately 537 million individuals were affected by diabetes, a number anticipated to escalate to 643 million by the year 2030 and further to 783 million by 2045. Diabetes, characterized as a persistent metabolic ailment, necessitates unceasing daily care and management. In the context of Mauritius, as per the most recent report by the International Diabetes Federation, the prevalence of diabetes, specifically Type 2 Diabetes (T2D), stood at 22.6% of the population in 2021, with projections indicating a surge to 26.6% by the year 2045. Amidst this alarming trend, a concurrent advancement has been observed in the realm of technology, with artificial intelligence techniques showcasing promising capabilities in the spheres of medicine and healthcare. This doctoral dissertation embarks on the exploration of the intersection between artificial intelligence and diabetes education, prevention, and management.We initially focused on exploring the potential of artificial intelligence (AI), more specifically, deep learning, to address a critical complication linked to diabetes – Diabetic Foot Ulcer (DFU). The emergence of DFU poses the grave risk of lower limb amputations, consequently leading to severe socio-economic repercussions. In response, we put forth an innovative solution named DFU-HELPER. This tool serves as a preliminary measure for validating the treatment protocols administered by healthcare professionals to individual patients afflicted by DFU. The initial assessment of the proposed tool has exhibited promising performance characteristics, although further refinement and rigorous testing are imperative. Collaborative efforts with public health experts will be pivotal in evaluating the practical efficacy of the tool in real-world scenarios. This approach seeks to bridge the gap between AI technologies and clinical interventions, with the ultimate goal of improving the management of patients with DFU.Our research also addressed the critical aspects of privacy and confidentiality inherent in handling health-related data. Acknowledging the extreme importance of safeguarding sensitive information, we delved into the realm of Peer-to-Peer Federated Learning. This investigation specifically found application in our proposal for the DFU-Helper tool discussed earlier. By exploring this advanced approach, we aimed to ensure that the implementation of our technology aligns with privacy standards, thereby fostering a trustworthy and secure environment for healthcare data management.Finally, our research extended to the development of an intelligent conversational agent designed to offer round-the-clock support for individuals seeking information about diabetes. In pursuit of this goal, the creation of an appropriate dataset was paramount. In this context, we leveraged Natural Language Processing techniques to curate data from online media sources focusing on diabetes-related content
Bréholée, Benoît. "Interconnexion de simulations distribuées HLA". École nationale supérieure de l'aéronautique et de l'espace (Toulouse ; 1972-2007), 2005. http://www.theses.fr/2005ESAE0003.
Testo completoBenitez-Eslava, Edgardo. "Réformer le service de l'eau: Histoire, système technique et régulation de firmes. Le cas du District Fédéral du Mexique (1992-2003)". Phd thesis, Ecole des Ponts ParisTech, 2005. http://pastel.archives-ouvertes.fr/pastel-00001445.
Testo completoMestoukirdi, Mohamad. "Reliable and Communication-Efficient Federated Learning for Future Intelligent Edge Networks". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS432.
Testo completoIn the realm of future 6G wireless networks, integrating the intelligent edge through the advent of AI signifies a momentous leap forward, promising revolutionary advancements in wireless communication. This integration fosters a harmonious synergy, capitalizing on the collective potential of these transformative technologies. Central to this integration is the role of federated learning, a decentralized learning paradigm that upholds data privacy while harnessing the collective intelligence of interconnected devices. By embracing federated learning, 6G networks can unlock a myriad of benefits for both wireless networks and edge devices. On one hand, wireless networks gain the ability to exploit data-driven solutions, surpassing the limitations of traditional model-driven approaches. Particularly, leveraging real-time data insights will empower 6G networks to adapt, optimize performance, and enhance network efficiency dynamically. On the other hand, edge devices benefit from personalized experiences and tailored solutions, catered to their specific requirements. Specifically, edge devices will experience improved performance and reduced latency through localized decision-making, real-time processing, and reduced reliance on centralized infrastructure. In the first part of the thesis, we tackle the predicament of statistical heterogeneity in federated learning stemming from divergent data distributions among devices datasets. Rather than training a conventional one-model-fits-all, which often performs poorly with non-IID data, we propose user-centric set of rules that produce personalized models tailored to each user objectives. To mitigate the prohibitive communication overhead associated with training distinct personalized model for each user, users are partitioned into clusters based on their objectives similarity. This enables collective training of cohort-specific personalized models. As a result, the total number of personalized models trained is reduced. This reduction lessens the consumption of wireless resources required to transmit model updates across bandwidth-limited wireless channels. In the second part, our focus shifts towards integrating IoT remote devices into the intelligent edge by leveraging unmanned aerial vehicles as a federated learning orchestrator. While previous studies have extensively explored the potential of UAVs as flying base stations or relays in wireless networks, their utilization in facilitating model training is still a relatively new area of research. In this context, we leverage the UAV mobility to bypass the unfavorable channel conditions in rural areas and establish learning grounds to remote IoT devices. However, UAV deployments poses challenges in terms of scheduling and trajectory design. To this end, a joint optimization of UAV trajectory, device scheduling, and the learning performance is formulated and solved using convex optimization techniques and graph theory. In the third and final part of this thesis, we take a critical look at thecommunication overhead imposed by federated learning on wireless networks. While compression techniques such as quantization and sparsification of model updates are widely used, they often achieve communication efficiency at the cost of reduced model performance. We employ over-parameterized random networks to approximate target networks through parameter pruning rather than direct optimization to overcome this limitation. This approach has been demonstrated to require transmitting no more than a single bit of information per model parameter. We show that SoTA methods fail to capitalize on the full attainable advantages in terms of communication efficiency using this approach. Accordingly, we propose a regularized loss function which considers the entropy of transmitted updates, resulting in notable improvements to communication and memory efficiency during federated training on edge devices without sacrificing accuracy
Tu, Zhiying. "Federated approach for enterprise interoperability : a reversible model driven and HLA based methodology". Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14673/document.
Testo completoInteroperability is one of the requisite features for existing enterprises in the increasing competitive and complex global market. In the last decade, enterprise interoperability has been developed and prescribed by various kinds of frameworks, methods, and techniques. However interoperability development is still not mature enough to become a science. Meanwhile, it keeps evolving according to different business requirement and market environment. Nowadays, networked environment causes unpredictable dynamical situations, thus sustainable interoperability becomes a new research dimension in the interoperability of enterprise systems and applications domain. In the sustainable interoperability, enterprise interoperability dynamics is one of the focal topics. This dynamic approach also called federated is originated from Enterprise Interoperability Framework of INTEROP NoE, which aims to establish interoperability on the fly. This thesis presents current state on federated approaches to develop enterprise interoperability dynamics. Based on this study, a reversible model driven and HLA based methodology is proposed for achieving federated approach for Enterprise Interoperability. It reuses distributed simulation interoperability concepts to facilitate and coordinate the communication between heterogeneous distributed information systems of the enterprises. The platform is complaint with the latest version of the High Level Architecture (HLA) that is a distributed communication standard. This framework is also proposing a development lifecycle that intends to reuse existing information systems without recoding them but by adapting them to the new requirements of interoperability dynamics
Hao, Jialin. "Machine learning for road active safety in vehicular networks". Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAS003.
Testo completoThis thesis focuses on the development of a safe and efficient LCA maneuver in the context of drone-assisted vehicle networks (DAVN). In fact, lane change maneuvers contribute significantly to road accidents, requiring effective solutions within road networks. Current lane change assistance (LCA) strategies relying solely on deep reinforcement learning (DRL) are limited by local vehicle information, neglecting a global view of traffic conditions. To address this problem, unmanned aerial vehicles (UAVs), or drones, present a promising extension of automotive network services due to their mobility, computing capabilities, and line-of-sight (LoS) communications links with road vehicles. In the first step, we conduct a literature review on LCA within DAVN, highlighting the potential of drones to enhance road safety. Existing LCA approaches predominantly rely on local vehicle information and fail to consider overall traffic states. To address this limitation, we propose the GL-DEAR: joint global and local drone-assisted lane change platform based on Deep-Q Network (DQN) with a dynamic reward function, for LCA with drones' assistance. The proposed platform consists of three modules: road with random risks and emergency vehicles; data file acquisition and processing; and real-time lane change decision-making. The lane change maneuver is based on a Deep Q-Network with dynamic reward functions. Specifically, we adopt the authentic NGSIM dataset-based lane change models for ordinary road vehicles to recreate real world lane change behaviors in the simulations. Numerical results demonstrate the platform's ability to achieve collision-free trips on risky highways with emergency vehicles. In the second step, we identify a lack of calibration for the global update frequency in FL algorithms and the absence of thorough drone-level processing delay assessment. To this end, we propose the drone assisted Federated Reinforcement Learning (FRL)-based LCA framework, DAFL. This framework enables cooperative learning between ego vehicles by applying Federated Learning (FL). It includes a client reputation-based global model aggregation algorithm and a comprehensive analysis of End-to-End (E2E) delay at the drone. Specifically, the global update frequency is dynamically adjusted according to road safety measurements and drone energy consumption, yielding efficient results in simulations. In the third step, we devise the DOP-T algorithm for optimizing drone trajectories in dynamic vehicular networks. This algorithm aims to balance drone energy consumption and road safety. We provide a comprehensive state-of-the-art review of the existing drone trajectory planning techniques. Then, based on the vehicle E2E delay modeling and the drone energy consumption modeling in the second step, we train a Offline Reinforcement Learning (ORL) model to avoid power-consuming online training. Simulation results demonstrate a significant reduction in drone energy consumption and vehicle E2E delay using the trained model
Zecchin, Matteo. "Robust Machine Learning Approaches to Wireless Communication Networks". Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS397.pdf.
Testo completoArtificial intelligence is widely viewed as a key enabler of sixth generation wireless systems. In this thesis we target fundamental problems arising from the interaction between these two technologies with the end goal of paving the way towards the adoption of reliable AI in future wireless networks. We develop of distributed training algorithms that allow collaborative learning at edge of wireless networks despite communication bottlenecks, unreliability of its workers and data heterogeneity. We then take a critical look at the application of the standard frequentist learning paradigm to wireless communication problems and propose an extension of the generalized Bayesian learning, that concurrently counteracts three prominent challenges arising in application domain: data scarcity, the presence of outliers and model misspecification
Libri sul tema "Réseau fédéré"
Chief Officers of State Library Agencies (U.S.) e Library of Congress. Network Development and MARC Standards Office., a cura di. The role of state library agencies in the evolving national information network: Proceedings of the Joint Meeting of the Library of Congress Network Advisory Committee and the Chief Officers of State Library Agencies, April 27-29, 1992. Washington: Network Development and MARC Standards Office, Library of Congress, 1992.
Cerca il testo completoMangeot, Mathieu, e Agnès Tutin, a cura di. Lexique(s) et genre(s) textuel(s) : approches sur corpus. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.9782813003454.
Testo completoLibrary of Congress. The Role of State Library Agencies in the Evolving National Information Network: Proceedings of the Joint Meeting of the Library of Congress Network (Network planning paper). Library of Congress, 1992.
Cerca il testo completoCapitoli di libri sul tema "Réseau fédéré"
Bruzulier, Caroline, Catherine Neveu e Ramatou Sow. "Chapitre 1. Le pouvoir d’agir en débat au sein du réseau fédéré des centres sociaux". In Le pouvoir d’agir dans les centres sociaux, 31–50. Presses universitaires du Septentrion, 2023. http://dx.doi.org/10.4000/books.septentrion.141437.
Testo completoDrémeaux, François. "Histoire(s) de la diplomatie culturelle française". In Histoire(s) de la diplomatie culturelle française, 460–73. Éditions de l'Attribut, 2024. http://dx.doi.org/10.3917/attri.chaub.2024.01.0460.
Testo completoVenditelli, F., D. Lemery, J. B. Gouyon e A. Simon. "Réseaux de santé périnatale Fédérer les professionnels autour de la naissance". In Traité d'obstétrique, 605–16. Elsevier, 2010. http://dx.doi.org/10.1016/b978-2-294-07143-0.50078-0.
Testo completo"Biographie des auteurs". In Additive manufacturing in orthognathic surgery: A case study. Université Paris Cité, 2024. http://dx.doi.org/10.53480/imp3d.3140ea.
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