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Articoli di riviste sul tema "Modélisation et simulation basées sur les agents"
Phan1, Denis. "Pourquoi un cadre ontologique pour la modélisation multi-agents en sciences humaines et sociales?" Nouvelles perspectives en sciences sociales 5, n. 2 (6 luglio 2010): 101–33. http://dx.doi.org/10.7202/044079ar.
Testo completoDalle, Jean-Michel. "Dynamiques d'adoption, coordination et diversité : la diffusion des standards technologiques." Revue économique 46, n. 4 (1 luglio 1995): 1081–98. http://dx.doi.org/10.3917/reco.p1995.46n4.1081.
Testo completoMathian, Hélène, e Lena Sanders. "Numérique versus symbolique". Revue Internationale de Géomatique 31, n. 1-2 (gennaio 2022): 21–45. http://dx.doi.org/10.3166/rig31.21-45.
Testo completoOuld Mohamed Yahya, Ahmed, Abdel Kader Ould Mahmoud e Issakha Youm. "Etude et modélisation d’un générateur photovoltaïque". Journal of Renewable Energies 11, n. 3 (30 settembre 2008). http://dx.doi.org/10.54966/jreen.v11i3.97.
Testo completoFoucher, Fabrice, Sébastien Lonné, Philippe Dubois, Stéphane Leberre, Pierre Calmon, Michael Enright e Yasin Zaman. "Apports d’une cosimulation “END – Tolérance aux dommages” dans la réduction des risques de rupture". e-journal of nondestructive testing 28, n. 9 (settembre 2023). http://dx.doi.org/10.58286/28527.
Testo completoDorval, Vincent, Nicolas Leymarie, Alexandre Imperiale, Edouard Demaldent, Zakaria Aghenzour e Pierre-Emile Lhuillier. "Simulations numériques à l'échelle de microstructures hétérogènes pour déterminer des propriétés effectives de propagation ultrasonore". e-journal of nondestructive testing 28, n. 9 (settembre 2023). http://dx.doi.org/10.58286/28514.
Testo completoMeier, Olivier. "COMMENT LES VISITES VIRTUELLES TRANSFORMENT LE MÉTIER D’AGENT IMMOBILIER". Management & Data Science, 2022. http://dx.doi.org/10.36863/mds.a.21643.
Testo completoKameni, Eric, Theo Van Der Weide e W. T. De Groot. "From conceptual model to implementation model Piloting a multi-level case study in Cameroon." Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 32 - 2019 - 2020 (1 ottobre 2019). http://dx.doi.org/10.46298/arima.3822.
Testo completoTesi sul tema "Modélisation et simulation basées sur les agents"
Brousmiche, Kei-Léo. "Modélisation et simulation multi-agent de la formation et de la dynamique d’attitudes basées sur les croyances". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066623/document.
Testo completoWe study in this thesis the problem of social attitude formation and dynamics using multi agent simulation. The concept of attitude could be defined as a global evaluation of a social object, based on cognitive or affective information. Our works belongs to the field of social simulation which aims to reproduce in a virtual environment complex social phenomenon at a macroscopic level based on microscopic representations of individuals and their interactions. While existing approaches in this field rarely consider the results of studies in human sciences on the topic of attitude, we propose to follow a psychomimtic approach by micro-founding the cognitive model of our agents on human and social sciences' theories on individual's perception, inter-personal and media communication, belief revision, affective responses and the sentiment of unexpectedness. This model aims to reproduce at a microscopic level attitude dynamics toward actors who perpetuate actions witnessed by the individuals. We have proceeded to a functional analysis of the model's various components based on abstracts scenarios in order to study the capabilities of our model, and more precisely the describable phenomenon such as information diffusion, resistance to disinformation or the conformity process. The model has been applied in the context of French military operations of stabilisation in Afghanistan. The goal of this experience consists in reproducing opinion polls results of the locals toward the present Forces, collected during the intervention, based on a military scenario which has been recreated in partnership with officers who were in charge of operations between 2011 and 2012. Simulation results that follow a model calibration process show an error below 3 points of disparity compared to the real data. Finally, we propose a microscopic analysis of the results by applying automatic classification techniques on the simulated individuals in order to explain the multiple attitudes tendencies in the population
Brousmiche, Kei-Léo. "Modélisation et simulation multi-agent de la formation et de la dynamique d’attitudes basées sur les croyances". Electronic Thesis or Diss., Paris 6, 2015. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2015PA066623.pdf.
Testo completoWe study in this thesis the problem of social attitude formation and dynamics using multi agent simulation. The concept of attitude could be defined as a global evaluation of a social object, based on cognitive or affective information. Our works belongs to the field of social simulation which aims to reproduce in a virtual environment complex social phenomenon at a macroscopic level based on microscopic representations of individuals and their interactions. While existing approaches in this field rarely consider the results of studies in human sciences on the topic of attitude, we propose to follow a psychomimtic approach by micro-founding the cognitive model of our agents on human and social sciences' theories on individual's perception, inter-personal and media communication, belief revision, affective responses and the sentiment of unexpectedness. This model aims to reproduce at a microscopic level attitude dynamics toward actors who perpetuate actions witnessed by the individuals. We have proceeded to a functional analysis of the model's various components based on abstracts scenarios in order to study the capabilities of our model, and more precisely the describable phenomenon such as information diffusion, resistance to disinformation or the conformity process. The model has been applied in the context of French military operations of stabilisation in Afghanistan. The goal of this experience consists in reproducing opinion polls results of the locals toward the present Forces, collected during the intervention, based on a military scenario which has been recreated in partnership with officers who were in charge of operations between 2011 and 2012. Simulation results that follow a model calibration process show an error below 3 points of disparity compared to the real data. Finally, we propose a microscopic analysis of the results by applying automatic classification techniques on the simulated individuals in order to explain the multiple attitudes tendencies in the population
Six, Lancelot. "Vers un modèle de comportements de véhicules lourds en utilisant une méthode incrémentale basée sur la vérification et l'hystérésis : le modèle ArchiPL". Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066497/document.
Testo completoCongestion phenomena are a major issue modern societies have to face. Understanding them, their creation, their evolution and their real impact are major questions addressed by the scientific community since the half of the twentieth century. A large number of simulation models have been developed to reproduce and study the traffic dynamics. Among them, microscopic model are designed to reproduce macroscopic phenomena such as congestion by reproducing individual vehicles' behavior. However, despite the negative influence of large vehicles on the flow, very few models took them into account. Those vehicles are usually dealt with as any other vehicle, except for a few parameters. In this thesis, we reconsider this hypothesis and try to identify how the behavior of large vehicles differs from other vehicles' behavior. We propose the VIM4MAS development methodology to help in this process. This method is used to improve a generic vehicle's behavior model and refine it until it can reproduce the most important aspects of the large vehicles' behaviors. To understand and identify key properties of longitudinal behaviors of vehicles, we have developed an analysis methodology based on the study of hysteresis phenomena. This analysis methodology allows to highlight key properties such as anticipation capabilities of drivers. The outcome of this work is the ArchiPL model for large vehicles' behaviors. This models shows an improvement of the behaviour quality at the microscopic level, while being consistent with the literature with respect to emergent phenomena
Amakama, Nimisingha Jacob. "Conception et mise en œuvre d'une solution interopérable d'un hôpital de campagne mobile dédié à l'industrie pétrolière et gazière". Electronic Thesis or Diss., IMT Mines Alès, 2024. http://www.theses.fr/2024EMAL0003.
Testo completoThis study examines the application of computational techniques and disaster response role-playing game to assess the feasibility of developing a reproducible and adaptable simulation model for disaster response and crisis decision-making in healthcare. A crisis management approach is used to deploy resources and evacuate victims from a hypothetical disaster site following a sudden onset of disaster. This approach requires diverse agents and their ability to coordinate and allocate resources effectively. While the model in no way replaces any real system, the simulations and exercise developed and implemented in this study can serve as an analytical tool to support process improvement, training and decision-making.The simulation model and game developed for this study analysed the results of both reactive and deliberative agents’ decisions, evaluated as mortality, and mean wait time outcomes from interacting emergency departments. The core elements of the developed agent-based model (NetLogo 6.3.0) were then transformed and implemented in a tabletop serious game where participants played through the model's decision-making rules, providing an answer to the study’s research questions. This research questions posed in this study are: (1) "How can the interaction between a regional hospital (RH) and a mobile field hospital (MFH) be modelled for a disaster response setting for the oil and gas industry?" and (2) "How can Disaster Response Tabletop Role-Playing Games (DRTRPGs) be used to verify/validate the representativeness of the ABMS model agents’ response process in the context of the disaster response scenario?" The aim of this study is to "improve the interoperability between a regional hospital and a mobile field hospital by detailing the process of interaction between the systems," describing a typical disaster response incident control system.In the event of an industrial explosion such as that hypothesized in this study, the parameters examined highlighted the uncertainties associated with the complexity of responding to a disaster scenario and the variability due to the crisis context as critical to patient outcomes. The examined indicators can serve two purposes: (1) enable an assessment of the overall effectiveness of disaster response strategies; and (2) draw attention to elements in the context of disaster response management that may have larger and complementary impacts. The need for informed decision-making in disaster situations to reduce patient mortality rates and mean waiting times between interoperable healthcare systems is demonstrated in this study through modelling, simulation and gamification. Therefore, the potential and effectiveness of using combined techniques to gain valuable insights into the interactions within complex systems is established
Gangat, Yasine. "Architecture Agent pour la modélisation et simulation de systèmes complexes multidynamiques : une approche multi-comportementale basée sur le pattern "Agent MVC"". Phd thesis, Université de la Réunion, 2013. http://tel.archives-ouvertes.fr/tel-01022620.
Testo completoSix, Lancelot. "Vers un modèle de comportements de véhicules lourds en utilisant une méthode incrémentale basée sur la vérification et l'hystérésis : le modèle ArchiPL". Electronic Thesis or Diss., Paris 6, 2014. http://www.theses.fr/2014PA066497.
Testo completoCongestion phenomena are a major issue modern societies have to face. Understanding them, their creation, their evolution and their real impact are major questions addressed by the scientific community since the half of the twentieth century. A large number of simulation models have been developed to reproduce and study the traffic dynamics. Among them, microscopic model are designed to reproduce macroscopic phenomena such as congestion by reproducing individual vehicles' behavior. However, despite the negative influence of large vehicles on the flow, very few models took them into account. Those vehicles are usually dealt with as any other vehicle, except for a few parameters. In this thesis, we reconsider this hypothesis and try to identify how the behavior of large vehicles differs from other vehicles' behavior. We propose the VIM4MAS development methodology to help in this process. This method is used to improve a generic vehicle's behavior model and refine it until it can reproduce the most important aspects of the large vehicles' behaviors. To understand and identify key properties of longitudinal behaviors of vehicles, we have developed an analysis methodology based on the study of hysteresis phenomena. This analysis methodology allows to highlight key properties such as anticipation capabilities of drivers. The outcome of this work is the ArchiPL model for large vehicles' behaviors. This models shows an improvement of the behaviour quality at the microscopic level, while being consistent with the literature with respect to emergent phenomena
Gallab, Maryam. "Développement d’une approche d’aide à la maitrise des risques dans les activités de maintenance d'une chaine logistique : Approche par modélisation et simulation basée sur les systèmes multi-agents". Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM028/document.
Testo completoThe main objective of this thesis is to develop a multi-agent approach to designing a model to overcome risks of maintenance activities. The aim is to explore the maintenance complexity and to indicate the interactions between the maintenance function and the risk assessment.Firstly, we are interested in designing a systemic model to identify and model the industrial system, to show the different interactions between its elements, to analyze and to evaluate risks of maintenance activities. We propose the MOSAR method and the UML language to design a cognitive reference model. This model served as a starting point for designing a database using the SQL language, which is operated by Multi-Agent model to acquire the necessary information for its operation.On the other hand, we develop a framework of a multi-agent system that aims to anticipate failures scenarios and the decision-making by simulating the studied system behaviour. A comparison between the existing platforms dedicated to Multi-Agent Systems is performed to choose the appropriate platform for the simulation.Finally, the developed models are applied in the LPG supply chain (Liquefied Petroleum Gas). A simulator was developed using the AnyLogic platform in order to study the system behaviour and to simulate the failure scenarios chosen by the industry, for the calculation of the criticality from three parameters (Frequency, severity, detectability), and for obtaining a Dashboard containing a set of maintenance performance indicators. The proposed simulation models help to guide the industries toward good decisions to avoid risky situations that may trigger disruptive events damaging
Hermellin, Emmanuel. "Modélisation et implémentation de simulations multi-agents sur architectures massivement parallèles". Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT334/document.
Testo completoMulti-Agent Based Simulations (MABS) represents a relevant solution for the engineering and the study of complex systems in numerous domains (artificial life, biology, economy, etc.). However, MABS sometimes require a lot of computational resources, which is a major constraint that restricts the possibilities of study for the considered models (scalability, real-time interaction, etc.).Among the available technologies for HPC (High Performance Computing), the GPGPU (General-Purpose computing on Graphics Processing Units) proposes to use the massively parallel architectures of graphics cards as computing accelerator. However, while many areas benefit from GPGPU performances (meteorology, molecular dynamics, finance, etc.). Multi-Agent Systems (MAS) and especially MABS hardly enjoy the benefits of this technology: GPGPU is very little used and only few works are interested in it. In fact, the GPGPU comes along with a very specific development context which requires a deep and not trivial transformation process for multi-agents models. So, despite the existence of works that demonstrate the interest of GPGPU, this difficulty explains the low popularity of GPGPU in the MAS community.In this thesis, we show that among the works which aim to ease the use of GPGPU in an agent context, most of them do it through a transparent use of this technology. However, this approach requires to abstract some parts of the models, what greatly limits the scope of the proposed solutions. To handle this issue, and in contrast to existing solutions, we propose to use a nhybrid approach (the execution of the simulation is shared between both the processor and graphics card) that focuses on accessibility and reusability through a modeling process that allows to use directly GPU programming while simplifying its use. More specifically, this approach is based on a design principle, called GPU delegation of agent perceptions, consists in making a clear separation between the agent behaviors, managed by the processor, and environmental dynamics, handled by the graphics card. So, one major idea underlying this principle is to identify agent computations which can be transformed in new structures (e.g. in the environment) in order to distribute the complexity of the code and modulate its implementation. The study of this principle and the different experiments conducted show the advantages of this approach from both a conceptual and performances point of view. Therefore, we propose to generalize this approach and define a comprehensive methodology relying on GPU delegation specifically adapted to the use of massively parallel architectures for MABS
Coullon, Hélène. "Modélisation et implémentation de parallélisme implicite pour les simulations scientifiques basées sur des maillages". Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2029/document.
Testo completoParallel scientific computations is an expanding domain of computer science which increases the speed of calculations and offers a way to deal with heavier or more accurate calculations. Thus, the interest of scientific computations increases, with more precised results and bigger physical domains to study. In the particular case of scientific numerical simulations, solving partial differential equations (PDEs) is an especially heavy calculation and a perfect applicant to parallel computations. On one hand, it is more and more easy to get an access to very powerfull parallel machines and clusters, but on the other hand parallel programming is hard to democratize, and most scientists are not able to use these machines. As a result, high level programming models, framework, libraries, languages etc. have been proposed to hide technical details of parallel programming. However, in this “implicit parallelism” field, it is difficult to find the good abstraction level while keeping a low programming effort. This thesis proposes a model to write implicit parallelism solutions for numerical simulations such as mesh-based PDEs computations. This model is called “Structured Implicit Parallelism for scientific SIMulations” (SIPSim), and proposes an approach at the crossroads of existing solutions, taking advantage of each one. A first implementation of this model is proposed, as a C++ library called SkelGIS, for two dimensional Cartesian meshes. A second implementation of the model, and an extension of SkelGIS, proposes an implicit parallelism solution for network-simulations (which deals with simulations with multiple physical phenomenons), and is studied in details. A performance analysis of both these implementations is given on real case simulations, and it demonstrates that the SIPSim model can be implemented efficiently
Torregrosa, jordan Sergio. "Approches Hybrides et Méthodes d'Intelligence Artificielle Basées sur la Simulation Numérique pour l'Optimisation des Systèmes Aérodynamiques Complexes". Electronic Thesis or Diss., Paris, HESAM, 2024. http://www.theses.fr/2024HESAE002.
Testo completoThe industrial design of a component is a complex, time-consuming and costly process constrained to precise physical, styling and development specifications led by its future conditions and environment of use. Indeed, an industrial component is defined and characterized by many parameters which must be optimized to best satisfy all those specifications. However, the complexity of this multi-parametric constrained optimization problem is such that its analytical resolution is compromised.In the recent past, such a problem was solved experimentally, by trial and error, leading to expensive and time-consuming design processes. Since the mid-20th century, with the advancement and widespread access to increasingly powerful computing technologies, the ``virtual twins'', or physics-based numerical simulations, became an essential tool for research and development, significantly diminishing the need for experimental measurements. However, despite the computing power available today, ``virtual twins'' are still limited by the complexity of the problem solved and present some significant deviations from reality due to the ignorance of certain subjacent physics. In the late 20th century, the volume of data has surge enormously, massively spreading in the majority of fields and leading to a wide proliferation of Artificial Intelligence (AI) techniques, or ``digital twins'', partially substituting the ``virtual twins'' thanks to their lower intricacy. Nevertheless, they need an important training stage and can lead to some aversion since they operate as black boxes. Today, these technological evolutions have resulted in a framework where theory, experimentation, simulation and data can interact in synergy and reinforce each other.In this context, Stellantis aims to explore how AI can improve the design process of a complex aerodynamic system: an innovative cockpit air vent. To this purpose, the main goal of this thesis is to develop a parametric surrogate of the aerator geometry which outputs the norm of the velocity field at the pilot's face in order to explore the space of possible geometries while evaluating their performances in real time. The development of such a data-based metamodel entails several conceptual problems which can be addressed with AI.The use of classical regression techniques can lead to unphysical interpolation results in some domains such as fluid dynamics. Thus, the proposed parametric surrogate is based on Optimal Transport (OT) theory which offers a mathematical approach to measure distances and interpolate between general objects in a novel way.The success of a data-driven model relies on the quality of the training data. On the one hand, experimental data is considered as the most realistic but is extremely costly and time-consuming. On the other hand, numerical simulations are cheaper and faster but present a significant deviation from reality. Therefore, a Hybrid Twin approach is proposed based on Optimal Transport theory in order to bridge the ignorance gap between simulation and measurement.The sampling process of training data has become a central workload in the development process of a data-based model. Hence, an Active Learning methodology is proposed to iteratively and smartly select the training points, based on industrial objectives expected from the studied component, in order to minimize the number of needed samples. Thus, this sampling strategy maximizes the performance of the model while converging to the optimal solution of the industrial problem.The accuracy of a data-based model is usually the main concern of its training process. However, reality is complex and unpredictable leading to input parameters known with a certain degree of uncertainty. Therefore, a data-based Uncertainty Quantifcation methodology, based on Monte Carlo estimators and OT, is proposed to take into account the uncertainties propagation into the surrogate and to quantify their impact on its precision