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Traffic flow can be considered as a hybrid system which is characterized by two major behaviours: continuous ones in motorways and discrete ones in road junctions. We propose a modelling approach based on Petri nets. For this purpose, places of Petri nets stand for the road sections and transitions describe the flow between two consecutive sections and at(More)
Simulation is often used for the evaluation of a Master Production Schedule (MPS). Also, the goal of this paper is the study of the design of a simulation model by reducing its complexity. According to theory of constraints, we want to build reduced models composed exclusively by bottleneck and, in order to do that, a neural network, particularly a(More)
Sélection de la structure d'un perceptron multicouches pour la réduction d'un modèle de simulation d'une scierie. Résumé— La simulation est souvent utilisée pour évaluer la pertinence d'un Programme Directeur de Production (PDP) ou pour en évaluer l'impact sur des scénarii d'ordonnancement détaillés de la fabrication. Dans ce cadre, nous nous proposons de(More)
Elagage d'un perceptron multicouches : utilisation de l'analyse de la variance de la sensibilité des paramètres. Résumé— Une phase primordiale lors de la modélisation d'un système à l'aide d'un perceptron multicouches reste la détermination de la structure du réseau. Dans ce cadre, nous proposons un algorithme d'élagage du réseau basé sur l'utilisation de(More)
Product quality level is become a key factor for companies' competitiveness. A lot of time and money are required to ensure and guaranty it. Besides, motivated by the need of traceability, collecting production data is now commonplace in most companies. Our paper aims to show that we can ensure the required quality thanks to an " on-line quality approch "(More)
Simulation is useful for the evaluation of a Master Production/distribution Schedule (MPS). Also, the goal of this paper is the study of the design of a simulation model by reducing its complexity. According to theory of constraints, we want to build reduced models composed exclusively by bottlenecks and a neural network. Particularly a multilayer(More)