Gouvêa, Elizabeth FerreiraSouza, Thatiana Cunha Navarro de2014-12-172010-11-182014-12-172010-03-02SOUZA, Thatiana Cunha Navarro de. Algorítmo evolucionário para a distribuição de produtos de petróleo por redes de polidutos. 2010. 135 f. Dissertação (Mestrado em Ciência da Computação) - Universidade Federal do Rio Grande do Norte, Natal, 2010.https://repositorio.ufrn.br/jspui/handle/123456789/18009The distribution of petroleum products through pipeline networks is an important problem that arises in production planning of refineries. It consists in determining what will be done in each production stage given a time horizon, concerning the distribution of products from source nodes to demand nodes, passing through intermediate nodes. Constraints concerning storage limits, delivering time, sources availability, limits on sending or receiving, among others, have to be satisfied. This problem can be viewed as a biobjective problem that aims at minimizing the time needed to for transporting the set of packages through the network and the successive transmission of different products in the same pipe is called fragmentation. This work are developed three algorithms that are applied to this problem: the first algorithm is discrete and is based on Particle Swarm Optimization (PSO), with local search procedures and path-relinking proposed as velocity operators, the second and the third algorithms deal of two versions based on the Non-dominated Sorting Genetic Algorithm II (NSGA-II). The proposed algorithms are compared to other approaches for the same problem, in terms of the solution quality and computational time spent, so that the efficiency of the developed methods can be evaluatedapplication/pdfAcesso AbertoRedes de polidutosOtimização multiobjetivoDistribuição de produtosMetaheurísticasComputação evolucionáriaOtimização por nuvem de partículasNon-dominated sorting genetic algorithm IIPipeline networksMultiobjective optimizationDistribution of productsMetaheuristicsEvolutionary computationParticle swarm optimizationNon-dominated sorting genetic algorithm IImasterThesisCNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::SISTEMAS DE COMPUTACAO