Evolutionary Optimization Methods
Mostrando 13-24 de 38 artigos, teses e dissertações.
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13. Um estudo sobre métodos de Kernel para classificação e agrupamento de dados
The learning machines project involves modelling a set of samples based on the mapping performance of the input-output pairs. The group of samples submitted to training provides information for determining the parameters of the model. And the validation and/or test group evaluates the performance of the classifier on its generalization ability. However, the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/08/2009
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14. Algoritmos evolucionÃrios multipopulaÃÃo na otimizaÃÃo multiobjetiva da remediaÃÃo de Ãguas subterrÃneas / Multi-population Evolutionary Algorithm Multi-Objective Optimization of Groundwater Remediation
Through the last three decades the evolutionary algorithms have been successful on application to many areas. Easily applied, efficiency and confidence are the main advantages of the evolutionary algorithms. In the groundwater remediation, generally, the objectives are the cost minimization, minimization of contaminant presence, maximization of pumping effic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/2009
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15. Identificação de parâmetros materiais através da simulação numérica de um processo de estampagem profunda / Parameter identification based on deep drawing experiments
Numerical simulation of metal forming processes requires a constitutive model, which depends upon adequate material parameters. A direct determination of material parameters usually admits homogeneous stress and strain states in the specimen, thereby narrowing the application range to moderate deformations or even compromising accuracy in some industrial app
Publicado em: 2009
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16. Evolutionary multi-objective algorithms for Phylogenetic Inference / Algoritmos evolutivos multi-objetivo para a reconstrução de árvores filogenéticas
The phylogeny reconstruction problem consists of determining the evolutionary relationships (usually represented as a tree) among species. This is a very complex problem since the tree search space is huge. Several phylogenetic reconstruction methods have been proposed. Many of them defines an optimality criterion for evaluation of possible solutions. Howeve
Publicado em: 2008
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17. Otimização baseada em confiabilidade de planos de manutenção de sistemas de distribuição de energia eletrica / Reliability based optimization of maintenance schedules for electric power distribution systems
Traditional approaches to electric power distribution systems maintenance are based on activities performed at regular intervals, or scheduled after analysis of needs end priorities identified after inspections. Although these maintenances activities are carried out to improve reliability, usually such approaches do not explicitly consider the impact of main
Publicado em: 2007
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18. Proposal of blind source separation methods for convolutive and nonlinear mixtures / Proposta de metodos de separação cega de fontes para misturas convolutivas e não-lineares
The problem of blind source separation (BSS) has attracted the attention of agrowing number of researchers, mostly due to its potential applications in a significant number of different areas. The objective of the present work is to propose new methods to solve the problem of BSS in the cases of convolutive mixtures and nonlinear mixtures. For the first case
Publicado em: 2007
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19. ALGORITMO EVOLUTIVO PARA O PROBLEMA DO CAIXEIRO VIAJANTE COM DEMANDAS HETEROGÊNEAS / ALGORITHM EVOLUTIONARY FOR THE TRAVELLING SALESMAN PROBLEM WITH HETEROGENEOUS DEMANDS
The work proposed in this dissertation is the field of combinatorial optimization, which aims to find a solution to these types of problems at a low computational time and effectively. The combinatorial optimization studies a set of discrete solutions, which have a finite number of elements, to find the best viable solution to the problems of this magnitude.
Publicado em: 2006
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20. A study and applications of differential evolution / Estudo e aplicaÃÃes da evoluÃÃo diferencial
In the last few decades, the application of optimization in engineering problems has grown considerably. There are various optimization methods and the performance of each one depends on the type of problem considered. The natural methods, which are based on probabilistic rules, have been widely studied. The purpose of this work is to present a detailed stud
Publicado em: 2006
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21. Detailed modelling and optmization of crystallization process / Modelagem detalhada e otimização de processos de cristalização
This work is focused on crystallization, a process widely used in industry, especially for the production of high added-value particles in pharmaceutical and fine chemistry industries. Although it is a process of established utilization, its mechanisms, modeling and the real control of its operation still require research and study. This thesis presents cons
Publicado em: 2006
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22. Uma análise experimental de abordagens heurísticas aplicadas ao problema do caixeiro viajante
Due to great difficulty of accurate solution of Combinatorial Optimization Problems, some heuristic methods have been developed and during many years, the analysis of performance of these approaches was not carried through in a systematic way. The proposal of this work is to make a statistical analysis of heuristic approaches to the Traveling Salesman Proble
Publicado em: 2006
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23. Optimization procedures for establishing reserve networks for biodiversity conservation taking into account population genetic structure
Conservation genetics has been focused on the ecological and evolutionary persistence of targets (species or other intraspecific units), especially when dealing with narrow-ranged species, and no generalized solution regarding the problem of where to concentrate conservation efforts for multiple genetic targets has yet been achieved. Broadly distributed and
Genetics and Molecular Biology. Publicado em: 2006
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24. O problema da reconfiguração nas redes WDM multifibras
An optical telecommunication network is configured to transmit a given traffic in order to meet a given objective. However the demand changes with time and infrastructure development. The reconfiguration problem stands in this context. It consists in being able to alter the configuration of the network to adjust it to the new traffic. It is generally necessa
Publicado em: 2006