Rate Of Convergence Of Algorithms
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. OPTIMIZATION OF A PULTRUSION PROCESS USING FINITE DIFFERENCE AND PARTICLE SWARM ALGORITHMS
AbstractPultrusion is one of several manufacturing processes for reinforced polymer composites. In this process fibers are continuously pulled through a resin bath and, after impregnation, the fiber-resin assembly is cured in a heated forming die. In order to obtain a polymeric composite with good properties (high and uniform degree of cure) and a process wi
Braz. J. Chem. Eng.. Publicado em: 2015-06
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2. A SURVEY ON MULTIOBJECTIVE DESCENT METHODS
We present a rigorous and comprehensive survey on extensions to the multicriteria setting of three well-known scalar optimization algorithms. Multiobjective versions of the steepest descent, the projected gradient and the Newton methods are analyzed in detail. At each iteration, the search directions of these methods are computed by solving real-valued optim
Pesqui. Oper.. Publicado em: 2014-12
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3. Estimação e previsão da estrutura a termo das taxas de juros usando técnicas de inteligência computacional / Term structure of interest rate modeling and forecasting using computational intelligence techniques
This work proposes the term structure of interest rates modeling and forecasting using computational intelligence techniques, based on data from the US and Brazilian fixed income markets. The yield curve modeling includes the use of some evolutionary computation methods like Genetic Algorithms, Differential Evolution and Evolution Strategies in comparison wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/06/2012
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4. Compulsory Flow Q-Learning: an RL algorithm for robot navigation based on partial-policy and macro-states
Reinforcement Learning is carried out on-line, through trial-and-error interactions of the agent with the environment, which can be very time consuming when considering robots. In this paper we contribute a new learning algorithm, CFQ-Learning, which uses macro-states, a low-resolution discretisation of the state space, and a partial-policy to get around obs
Journal of the Brazilian Computer Society. Publicado em: 2009-09
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5. Mathematical Modeling and Numeriacal Methods for Simulation of the Heat Conduction in Liquid Helium / Modelagem Matemática e Métodos Numéricos para Simulação da Condução do Calor no Hélio Líquido
The element helium, found mainly in natural gas reserves, condenses at temperature of 4.2K, and is the unique known substance that remains in liquid to absolute zero. In the liquid phase, the helium presents still another phase change in 2.19K, where passes of common liquid to superfluous liquid, with almost zero viscosity. These properties give the helium i
Publicado em: 2009
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6. Cadeias estocásticas parcimoniosas com aplicações à classificação e filogenia das seqüências de proteínas. / Parsimonious stochastic chains with applications to classification and phylogeny of protein sequences.
In this thesis we present some theoretical and practical results, concerning symbolic sequence modeling with parsimonious stochastic chains. Parsimonious stochastic chains, which include variable memory stochastic chains, constitute a generalization of fixed order Markov chains. The symbolic sequences modeled with parsimonious stochastic chains were the sequ
Publicado em: 2007
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7. Sobre equalizadores autodidatas de decisão realimentada aplicados a sistemas multiusuário
Due to the growing demand for mobile communications, adaptive equalizers play an important role for enhancing the efficiency of data transmission. In this scenario, the Decision Feedback Equalizer (DFE) stands out. It presents a favorable tradeoff between computational cost and efficient behavior, mainly when compared to Linear Transversal Equalizer. In this
Publicado em: 2007
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8. Dois ensaios sobre a desigualdade de renda dos municipios brasileiros
The role of initial conditions in establishing the long-term income levels of the economies, and, consequently, over inequality is a subject which remains in active debate. To this end, the first paper attempts to ascertain which of the convergence hypotheses absolute, conditional or club best describes the dynamics of the Brazilian municipalities income ove
Publicado em: 2006
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9. ANÁLISE DE DESEMPENHO DA TÉCNICA DE MULTIGRID EM PROBLEMAS DE FENÔMENOS DE TRANSPORTE / ANÁLISIS DEL DESEMPEÑO DE LA TÉCNICA MULTIGRID EN PROBLEMAS DE FENÓMENOS DE TRANSPORTE / PERFORMANCE ANALYSIS OF THE MULTIGRID TECHNIQUE FOR TRANSPORT PHENOMENA PROBLEMS
The numerical solution of fluid flows problems with heat transfer requires the solution of a set of coupled non- linear partial differencial equations. The major computational effort in solving these equations is due to the solution of the algebraic systems resultant from the discretization of the conservation equations. The convergence rate of iterative met
Publicado em: 1996