Multiobjective Genetic Algorithms
Mostrando 13-24 de 41 artigos, teses e dissertações.
-
13. Algoritmos genéticos multiobjetivos aplicados ao roteamento multicast com qualidade de serviço
Multicast Routing is an effective way to communicate between multiple routers into computer networks. In general, the quality of service (QoS) is required in most of multicast applications. Several researchers have investigated the application of genetic algorithms in multicast Routing with QoS restrictions. The evolutionary environments proposed in this dis
Publicado em: 2009
-
14. Algoritmos geneticos e o problema de corte multiobjetivo / Genetic algorithms and the cutting stock problem
Nesta dissertação, estudamos algoritmos genéticos para resolver o problema de corte unidimensional multiobjetivo, onde minimizamos o desperdício dos objetos processados e o número de padrões distintos denominado custo de setup. Primeiro, realizamos uma codificação baseada em grupos desenvolvida por Falkenauer e, em seguida, aplicamos o algoritmo gen�
Publicado em: 2009
-
15. Optimization study of airfoil performance using genetic algorithms / Otimização de desempenho de aerofólios supercríticos: uma abordagem baseada em algoritmos genéticos
The objective of present study is analyze the multi-objective optimization applied to transonic airfoils project comparing different ways to define the objective functions. The optimization is evaluated by the genetic algorithm NSGA-II. The results is analyzed using metrics of diversity and optimality for multi-objective problems, which two are proposed. The
Publicado em: 2009
-
16. Extensões da estatística scan espacial utilizando técnicas de otimização multi-objetivo
This work presents three new extensions of Kulldorffs Spatial Scan Statistic for the detection and inference of spatial clusters. Consider a map divided into m regions with known populations at risk and number of cases of some disease. We would like to know if the cases are randomly distributed over the m regions or not; if the cases are not randomly distrib
Publicado em: 2009
-
17. Metodologia para Projeto de Sistemas de SeguranÃa sob InteraÃÃo EstratÃgica com Enfoque Multiobjetivo
PolÃticas de seguranÃa contra aÃÃes de vandalismo, roubos, sabotagem e/ou terrorismo sÃo de grande importÃncia para assegurar a disponibilidade de alguns sistemas. Esta dissertaÃÃo possibilita atravÃs de teoria da confiabilidade, teoria dos jogos e otimizaÃÃo multiobjetivo via algoritmos genÃticos a montagem de sistemas de seguranÃa a partir da
Publicado em: 2009
-
18. ELECTRIC DISTRIBUTION POWER SYSTEMS RELIABILITY OPTIMIZATION: An Approach Considering the Selection and Allocation of Protection and Switching Devices / OTIMIZAÇÃO DA CONFIABILIDADE DE SISTEMAS DE DISTRIBUIÇÃO DE ENERGIA ELÉTRICA: Uma Abordagem Considerando a Seleção e Alocação de Dispositivos de Proteção e Manobras
One of the main goals of the electric utilities is to provide energy to its customers in a reliable and low cost way. Traditionally, the electricity sector regulatory commissions impose continuity targets, which must be carried out, to avoid great penalties. For many years, the electric utilities have adopted the practice of allowing the increment of tempora
Publicado em: 2009
-
19. Optimum design applied to electrooptic modulators / Projeto ótimo de moduladores eletroópticos
Many design developments involve the optimization of several objective functions. These objective functions are often conflicting with each other and they cannot be simply aggregated into only one function to be optimized. This type of problem is known as the multiobjective optimization problem, for which the solution is a set of points known as Pareto optim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2008
-
20. Técnica de gerenciamento da qualidade hídrica superficial baseada na otimização multiobjetivo / A technic of surface water quality management based on the multiobjective optimization
Problems of water quality management involve many aspirations of the users engaged, those that use water for wastewater dilution or for their consumption. Therefore, it is uncommon that decision-making mathematical models used are expressed in terms of a single objective, like the maximization of economic efficiency. Using a particular water system, one shou
Publicado em: 2008
-
21. Projeto ótimo de moduladores eletroópticos / Optimum design applied to electrooptic modulators
Many design developments involve the optimization of several objective functions. These objective functions are often conflicting with each other and they cannot be simply aggregated into only one function to be optimized. This type of problem is known as the multiobjective optimization problem, for which the solution is a set of points known as Pareto optim
Publicado em: 2008
-
22. Dilema da diversidade-acurácia: um estudo empírico no contexto de multiclassificadores
Multi-classifier systems, also known as ensembles, have been widely used to solve several problems, because they, often, present better performance than the individual classifiers that form these systems. But, in order to do so, its necessary that the base classifiers to be as accurate as diverse among themselves this is also known as diversity/accuracy dile
Publicado em: 2008
-
23. Modelo híbrido de otimização multiobjetivo para formação de células de manufatura / Hybrid multiobjective optimization model for manufacturing cell formation
O objetivo deste trabalho é propor um procedimento híbrido para a solução do problema de formação de células de manufatura com réplicas de máquinas. Constrói-se um modelo matemático de otimização multiobjetivo cujos valores das funções-objetivo são obtidos por meio da execução de um modelo de simulação de eventos discretos, o qual represe
Publicado em: 2008
-
24. Contribuição ao estudo dos absorvedores dinâmicos de vibrações não-lineares / A contribution to the study of Nonlinear Vibration Absorbers
In their simplest form, dynamic vibration absorbers (DVAs) are essentially devices of lumped parameters of mass-stiffness-damping that once connected in a given primary structure are capable of absorbing the vibratory energy at the connecting point, providing a reduction of the vibration level. These devices can be used in various configurations and find a n
Publicado em: 2008