Literatura académica sobre el tema "Agent multi-Tâches"
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Artículos de revistas sobre el tema "Agent multi-Tâches"
Baert, Quentin, Anne-Cécile Caron, Maxime Morge, Jean-Christophe Routier y Kostas Stathis. "Un système multi-agent adaptatif pour la réallocation de tâches au sein d’un job MapReduce". Revue Ouverte d'Intelligence Artificielle 3, n.º 5-6 (22 de noviembre de 2022): 557–85. http://dx.doi.org/10.5802/roia.43.
Texto completoTesis sobre el tema "Agent multi-Tâches"
Tadié, Guepfu Serge. "Un système multi-agent pour l'enseignement et la simulation de tâches coopératives". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0007/NQ42283.pdf.
Texto completoQuentel, Paul. "Architecture multi-agent distribuée et collaborative pour l’allocation de tâches à des senseurs : application aux systèmes navals". Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0406.
Texto completoThe changing context of naval and aerial defense requires a major modification of current sensor system architectures to overcome future threats and to integrate next generation devices and sensors. These sensors, heterogeneous, complementary, and embedded on naval or aerial platforms, are essential for acquiring data from the environment in order to establish the tactical situation. In this context, platforms can collaborate and share their sensor resources to achieve new functionalities and set up a global overview of the situation. In this thesis, we have designed and developed a multi-agent system for allocating tasks to distributed resources on distinct platforms in order to accomplish collaborative capabilities. We present scenarios illustrating the operational needs that the architecture must meet, thus establishing a set of specifications. Then, we detail the steps involved in designing and implementing this new architecture, describing each type of agent and the possible interactions between them. We propose an auction algorithm requiring exchanges between agents, subject to bandwidth and latency constraints. Finally, we present a test bed integrating tools for capturing and display system metrics, allowing the evaluation of agent concepts and their communication mechanisms. The objective is to demonstrate that our architecture meets the specified operational requirements, in particular the scalability of the agents’ algorithms and communication interfaces, fault tolerance, and system performance
Ahmadoun, Douae. "Interdependent task allocation via coalition formation for cooperative multi-agent systems". Electronic Thesis or Diss., Université Paris Cité, 2022. http://www.theses.fr/2022UNIP7088.
Texto completoTask allocation among multiple autonomous agents that must accomplish complex tasks has been one of the focusing areas of recent research in multi-agent systems. In many applications, the agents are cooperative and have to perform tasks that each requires a combination of different capabilities that a subset of agents can have. In this case, we can use coalition formation as a paradigm to assign coalitions of agents to tasks. For robotic systems, in particular, solutions to this task allocation problem have several and increasingly important real-world applications in defense, space, disaster management, underwater exploration, logistics, product manufacturing, and support in healthcare facilities support. Multiple coalition formation and task allocation mechanisms were introduced in the prior art, seldom accounting for interdependent tasks. However, it is recurrent to find tasks whose quality cannot be evaluated without considering the other tasks in real-world applications. These tasks are called interdependent in contrast to independent tasks that can be individually assessed, resulting in a global evaluation of the tasks' allocation that sums all the tasks' evaluations. Research in the past has led to many task allocation algorithms that address the case of independent tasks from different angles and under different paradigms. Other works solve the case of the interdependent tasks, but they do it either centrally with very high complexity or only for the case of precedence dependencies. However, many forms of interdependence may exist between tasks in real-world applications. In addition, these applications need task allocation mechanisms to be decentralised and available at anytime to allow them to return a solution at any time and to improve it if there is time left, to respond to their time-sensitivity and robustness issues. In this dissertation, we consider cooperative multi-agent environments where tasks are multi-agent and interdependent, and task allocation methods have to be decentralized and available at anytime. In this regard, we propose a problem formalisation that considers the agents' and the tasks' qualitative and quantitative attributes and captures the tasks' dependencies on the requirements level and the allocation evaluation level. We introduce a novel approach with a token-passing anytime decentralised coalition formation mechanism. The approach enables agents with complementary capabilities to form, autonomously and dynamically, feasible coalition structures that accomplish a global, composite task. It is based on forming a feasible coalition structure that allows the agents to decide which coalition to join and thus which task to do so that all the tasks can be feasible. Then, the formed structures are incrementally improved via agent replacements to optimise the global evaluation. The purpose is to accomplish the tasks with the best possible performance. The analysis of our algorithms' complexity shows that although the general problem is NP-complete, our mechanism provides a solution within an acceptable time. Simulated application scenarios are used to demonstrate the added value of our approach
Beauprez, Ellie. "Système multi-agents adaptatif pour l'équilibrage de charge centré utilisateur". Electronic Thesis or Diss., Université de Lille (2022-....), 2024. http://www.theses.fr/2024ULILB013.
Texto completoMy work is part of the research done by the SMAC team in the laboratory CRIStAL in Distributed Artificial Intelligence.Data sciences exploit large datasets on which computations are performed in parallel by differentnodes. These applications challenge distributed computing in terms of task allocation and load-balancing.In this thesis, I study the problem of continuous allocation of concurrent jobs, composed of situated tasks,underlying the deployment of massive data processing applications on a cluster of servers. The objectiveis to minimise the mean flowtime of these jobs.In this paper, I propose a multi-agent task-worker assignment model where computing nodes are controlled by collaborative agents, called node agents, which negotiate local task reallocations to achieve a bettertask distribution. These negotiations take place during the tasks execution. Thanks to their peer modelling,node agents are able to identify opportunities within the current allocation to negotiate task delegationsor even swaps with their peers. To improve the responsiveness of the multi-agent strategy, which is basedon the asynchronous execution of interacting individual behaviours, the negotiation process is based onmultiple concurrent bilateral negotiations.My experimental campaigns allow me to empirically validate the efficiency of the reactivity of mymulti-agent strategy. This is because my method encourages rapid reordering of tasks, rather than thesearch for the optimum solution, which allows responsiveness. My experiments show that, when executedconcurrently with the consumption process, our reallocation strategy : (1) significantly reduces the rescheduling time ; (2) improves the flowtime ; (3) does not penalise the consumption ; (4) is robust to executionhazards ; and (5) adapts to the release of jobs
Ben, Othman Sara. "Système collaboratif d'aide à l'ordonnancement et à l'orchestration des tâches de soins à compétences muiltiples". Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22651/document.
Texto completoHealth care systems management and the avoidance of overcrowding phenomena are major issues. The aim of this thesis is to implement a Collaborative Support System for Scheduling and Orchestration (CSSystSO) of multi-skill health care tasks in order to avoid areas bottlenecks in the Pediatric Emergency Department (PED) and improve health care quality for patients. The CSSystSO integrates a collaborative Workflow approach to model patient journey in order to identify dysfunctions and peaks of activities of medical staff in the PED. The dynamic and uncertain aspect of the problem has led us to adopt an alliance between Multi-Agent Systems (MAS) and Evolutionary Algorithms (EA) for health care tasks treatment and scheduling taking into account the level of experience of the PED actors and their availabilities. In case of perturbations in the PED, a coalition of agents is formed to collaborate and negotiate in order to provide orchestration Workflow decisions to minimize the waiting time of patients during their treatment. The experimental results presented in this thesis justify the interest of the alliance between MAS and Metaheuristics to manage overcrowding phenomena in the PED. This work belongs to the project HOST (Hôpital: Optimisation, Simulation et évitement des tensions). (http://www.agence-nationale-recherche.fr/?Projet=ANR-11-TECS-0010)
De, Bufala Nicolas. "Impacts of digital automation on labor markets : an agent-based approach". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS128.
Texto completoIn this PHD, I present the NumJobs model which aims to simulate the whole economy, focusing on the labor market, in order to evaluate the impact of automation on the labor market. This is an agent-based model with around 60000 agents, which are divided in two categories : individuals, and firms. It contains multiple linked components : the labor market, the production of goods, the consumption of goods, demography, finance, and digital automation. This model is the result of a large analysis of available data for the components of the models, as we tried to limit the implemented elements for which we didn’t have data. The labor market is centered around the ROME referential from Pole-Emploi, in order to have real jobs, skills, and tasks, which are at the core of the interaction between individuals and firms inside the production function. Firms are differentiated by their workforce, their sector of activity (NACE), as well as their produced good type and its characteristics. Automation is modelized as digital goods that can be bought by firms and either augment the productivity of labor on a task, or replace this same labor by automating the task. Firms decide on a yearly basis which tasks they want to improve with digital goods, and compare different categories of assistance goods and automation goods in order to select the best option and compare it with its current status. We designed two experiments to evaluate the impact of automation on the labor market : one where the production of digital goods is shared between local firms, and a foreign simulated actor, and another experiment where all digital goods are produced locally
Renault, Benoît. "NAvigation en milieu MOdifiable (NAMO) étendue à des contraintes sociales et multi-robots". Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0105.
Texto completoAs robots become ever more commonplace in human environments, taking care of ever more tasks such as cleaning, security or food service, their current limitations only become more apparent. One such limitation is of their navigation capability in the presence of obstacles: they always avoid them, and freeze in place when avoidance is impossible. This is what brought about the creation of Navigation Among Movable Obstacles (NAMO) algorithms, expected to allow robots to manipulate obstacles as to facilitate their own movement. However, these algorithms were designed under the hypothesis of a single robot per environment, biasing NAMO algorithms into only optimizing the single robot's displacement cost - without any consideration for humans or other robots. While it is desirable to endow robots with the human capability of moving obstacles, they must however do so while respecting social norms and rules of humans. We have thus extended the NAMO problem as to take into account these new social and multi-robots aspects. By relying on the concept of affordance spaces, we have developed a social occupation cost model allowing the evaluation of the impact of moved objects on the environment's navigability. We implemented (and improved) reference NAMO algorithms, in our open source simulation tool, and modified them so that they may plan compromises between robot displacement cost and social occupation cost of moved obstacles - resulting in improved navigability. We also developed an implicit coordination strategy allowing the concurrent execution of these same algorithms by multiple robots as is, without any explicit communication requirements, while preserving the no-collision guarantee; verifying the relevance of our social occupation cost model in the actual presence of other robots. As such, this work constitutes the first steps towards a Social and Multi-Robot NAMO
Marza, Pierre. "Learning spatial representations for single-task navigation and multi-task policies". Electronic Thesis or Diss., Lyon, INSA, 2024. http://www.theses.fr/2024ISAL0105.
Texto completoAutonomously behaving in the 3D world requires a large set of skills, among which are perceiving the surrounding environment, representing it precisely and efficiently enough to keep track of the past, making decisions and acting to achieve specified goals. Animals, for instance humans, stand out by their robustness when it comes to acting in the world. In particular, they can efficiently generalize to new environments, but are also able to rapidly master many tasks of interest from a few examples. This manuscript will study how artificial neural networks can be trained to acquire a subset of these abilities. We will first focus on training neural agents to perform semantic mapping, both from augmented supervision signal and with proposed neural-based scene representations. Neural agents are often trained with Reinforcement Learning (RL) from a sparse reward signal. Guiding the learning of scene mapping abilities by augmenting the vanilla RL supervision signal with auxiliary spatial reasoning tasks will help navigating efficiently. Instead of modifying the training signal of neural agents, we will also see how incorporating specific neural-based representations of semantics and geometry within the architecture of the agent can help improve performance in goal-driven navigation. Then, we will study how to best explore a 3D environment in order to build neural representations of space that are as satisfying as possible based on robotic-oriented metrics we will propose. Finally, we will move from navigation-only to multi-task agents, and see how important it is to tailor visual features from sensor observations to the task at hand to perform a wide variety of tasks, but also to adapt to new unknown tasks from a few demonstrations. This manuscript will thus address different important questions such as: How to represent a 3D scene and keep track of previous experience in an environment? – How to robustly adapt to new environments, scenarios, and potentially new tasks? – How to train agents on long-horizon sequential tasks? – How to jointly master all required sub-skills? – What is the importance of perception in robotics?
Inguere, Tifaine. "Intégration des systèmes multi-agents aux systèmes embarqués pour la délégation de tâches". Thesis, Le Mans, 2018. http://www.theses.fr/2018LEMA3002/document.
Texto completoThis thesis shows how the integration of multi-agents systems within embedded systems can optimize tasks management. We notice a lack of flexibility for embedded systems and hypothesize that a multi-agents solution will allow the dynamic consideration of the system context of evolution. Embedded systems, being integrated into the user environment, are limited in terms of physical space and thus hardware resources. These limits involve the necessity to optimize the resources. We suggest experimenting multi-agents negotiation algorithms to delegate tasks between several resources. To validate our hypotheses, we detail the characteristics of multi-agents systems, their behavior, their models, the platforms on which they evolve, their communication standards and their social algorithms.We observed that the majority of the works of the multi-agents domain concentrated on other problems. Therefore, we proposed the formalization of embedded multi-agents systems and of anadapted multi-agents platform. We then experimented this platform within embedded systems with the case study of image processing, especially the calculation of a pixels interpolation.We led performance studies to estimate the administrative cost of a multi-agents solution, then considered these results in relation to the capacity earnings of our embedded systems. Our last experiments put to the test our solution of tasks delegation between several embedded cards within a heterogeneous context
Baert, Quentin. "Négociation multi-agents pour la réallocation dynamique de tâches et application au patron de conception MapReduce". Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I047/document.
Texto completoThe Rm||Cmax problem consists in allocating a set of tasks to m agents in order to minimize the makespan of the allocation, i.e. the execution time of all the tasks. This problem is known to be NP-hard as soon as the tasks are allocated to two or more agents (m ≥ 2). In addition, it is often assumed that the cost of a task is accurately estimated for an agent and that this cost does not change during the execution of tasks. In this thesis, I propose a decentralized and dynamic approach to improve the allocation of tasks. Thus, from an initial allocation and while they are executing tasks, collaborative agents initiate multiple auctions to reallocate the remaining tasks to be performed. These reallocations are socially rational, i.e. an agent agrees to take on a task initially allocated to another agent if the delegation of this task benefits to the entire system by decreasing the makespan. In addition, the dynamism of the process makes it possible to improve an allocation despite an inaccurate cost function and despite the variations of performance that can occur during the execution of tasks. This thesis provides a formal framework for multi-agent modeling and multi-agent resolution of a located tasks reallocation problem. In such a problem, the locality of the resources required to perform a task affects its cost for each agent of the system. From this framework, I present the interaction protocol used by the agents and I propose several strategies to ensure that the choices of agents have the greatest impact on the makespan of the current allocation. In the applicative context of this thesis, I propose to use this tasks reallocation process to improve the MapReduce design pattern. Widely used for the distributed processing of massive data, MapReduce has biases that the dynamic tasks reallocation process can help to counter. I implemented a distributed prototype that fits into the formal framework and implements the MapReduce design pattern. Thanks to this prototype, I am able to evaluate the effectiveness of the reallocation process and the impact of the different agent strategies
Actas de conferencias sobre el tema "Agent multi-Tâches"
Bouloiz, H. "Un modèle d’aide à la maitrise des risques dans les tâches de maintenance fondé sur le système multi-agents". En Congrès Lambda Mu 19 de Maîtrise des Risques et Sûreté de Fonctionnement, Dijon, 21-23 Octobre 2014. IMdR, 2015. http://dx.doi.org/10.4267/2042/56111.
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