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Auswahl der wissenschaftlichen Literatur zum Thema „Arbre couvrant de poids minimal“
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Zeitschriftenartikel zum Thema "Arbre couvrant de poids minimal"
Lavallée, I. „Un algorithme parallèle efficace pour construire un arbre de poids minimal dans un graphe“. RAIRO - Operations Research 19, Nr. 1 (1985): 57–69. http://dx.doi.org/10.1051/ro/1985190100571.
Der volle Inhalt der QuelleDissertationen zum Thema "Arbre couvrant de poids minimal"
Salazar, zendeja Luis. „Modèles et algorithmes pour le problème d'interdiction de l'arbre couvrant de poids minimal“. Electronic Thesis or Diss., Centrale Lille Institut, 2022. http://www.theses.fr/2022CLIL0028.
Der volle Inhalt der QuelleIn this thesis, we study the Minimum Spanning Tree Interdiction (MSTI) problem. This problem is a two-player game between a network operator and an interdictor. The former aims to determine a Minimum Spanning Tree (MST) in a network. Constrained by a budget, the latter seeks to change the network topology to increase the weight of aMST. Two types of interdiction are considered: total and partial interdiction. A total interdicted edge is considered absent while the weight of a partial interdicted edge is augmented by a predefined amount. The interdictor’s budget ismodeled as a cardinality, each edge has the same interdiction weight, or knapsack constraint, the interdiction weightsmight be different. Seven mathematical formulations for the MSTI problem are devised. They proved to be efficient on small and medium-size graphs. A Branch-and-Price algorithm and a Benders Decomposition algorithm are designedfor larger graphs. In addition, valid inequalities are proposed to strengthen the models and improve the efficiency of the proposed methods. Instances including up to 200 nodes and 19900 edges are solved to optimality
Tournier, Nicolas. „Synchronisation pour l'insertion de données dans des maillages 3D“. Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20221/document.
Der volle Inhalt der QuelleData security is one of the main issue in computer science. We need to develop solutions for confidentiality, communication, fingerprinting or identification applications for exemple. In this thesis made with STRATEGIES S.A., the chosen method to protect 3D meshes is watermarking.Watermarking is divided in two steps, the embedding and the extraction. In both of them a synchronization phase is needed. It is one of the most important step for 3D mesh because it permits to look for areas available to embed information, and order them. All the thesis is devoted to the synchronization step. First of all, we propose a classification of watermarking techniques based on the type of synchronization method instead of evaluation criterions such as robustness or capacity.Then, from methods based on Euclidean minimum spanning tree, we propose a theoritical analysis of the mobility of the vertices in that kind of structure. First, we explain the reasons of the sensibility of the structure. Secondly, we propose another scheme based on the Euclidean minimum spanning tree knowing its fragility
Do, Hiep-Thuan. „Extensibilité des moyens de traitements pour les données issues des vastes systèmes d'informations géographiques“. Phd thesis, Université d'Orléans, 2011. http://tel.archives-ouvertes.fr/tel-00660083.
Der volle Inhalt der QuelleLacour, Renaud. „Approches de résolution exacte et approchée en optimisation combinatoire multi-objectif, application au problème de l'arbre couvrant de poids minimal“. Thesis, Paris 9, 2014. http://www.theses.fr/2014PA090067/document.
Der volle Inhalt der QuelleThis thesis deals with several aspects related to solving multi-objective problems, without restriction to the bi-objective case. We consider exact solving, which generates the nondominated set, and approximate solving, which computes an approximation of the nondominated set with a priori guarantee on the quality.We first consider the determination of an explicit representation of the search region. The search region, defined with respect to a set of known feasible points, excludes from the objective space the part which is dominated by these points. Future efforts to find all nondominated points should therefore be concentrated on the search region.Then we review branch and bound and ranking algorithms and we propose a new hybrid approach for the determination of the nondominated set. We show how the proposed method can be adapted to generate an approximation of the nondominated set. This approach is instantiated on the minimum spanning tree problem. We review several properties of this problem which enable us to specialize some procedures of the proposed approach and integrate specific preprocessing rules. This approach is finally supported through experimental results