Penalty Methods
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Second-leg home advantage in the Copa Libertadores da América (2005-2015)
ABSTRACT 24. Aims To investigate the home advantage (HA) in the Copa Libertadores da América (CLA) from 2005 to 2015. Methods A naive analysis was applied considering how many times a team that played the second leg at home qualified for the next round. To verify differences between home, away and draw results, the Chi-square ( χ2 ) and the Full Bayesian
Motriz: rev. educ. fis.. Publicado em: 21/11/2017
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2. Imposition of Dirichlet Boundary Conditions in Element Free Galerkin Method through an Object-Oriented Implementation
Abstract One of the main drawbacks of Element Free Galerkin (EFG) method is its dependence on moving least square shape functions which don’t satisfy the Kronecker Delta property, so in this method it’s not possible to apply Dirichlet boundary conditions directly. The aim of the present paper is to discuss different aspects of three widely used methods o
Lat. Am. j. solids struct.. Publicado em: 2017-06
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3. Parametric Model Method and Deployment Simulation of Inflatable Antenna Structures
ABSTRACT: In this paper, we develop a parametric model method and simulate the deployment mechanism of inflatable antenna structures. Different folded methods are developed for the primary members of inflatable antenna structures, which include inflatable tubes, an inflatable torus, a reflector etc. The unstressed configuration and the folded configuration o
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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4. Particle swarm optimization in WDM/OCDM networks with physical impairments
In this paper, optimization procedures based on particle swarm optimization (PSO) are investigated, aiming to efficiently solve the optimal resource allocation for signal-to-noise plus interference ratio (SNIR) optimization of optical code paths (OCPs) from wavelength division multiplexing/optical code division multiplexing (WDM/OCDM) considering imperfectio
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-12
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5. O interrogatório por videoconferência no limiar do século XXI / The interrogation by videoconference at threshold of the 21st century
The issue of this study refers to the use of videoconference as a new paradigm to perform the criminal interrogation procedure in Brazil. The contemporary World prioritizes methods based on technological development, which also should be followed as an ideal in achieving justice, under penalty of the Judiciary falls behind the World surrounding it. The use o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/10/2012
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6. A Review of Gradient Algorithms for Numerical Computation of Optimal Trajectories
Abstract: In this paper, two classic direct methods for numerical computation of optimal trajectories were revisited: the steepest descent method and the direct one based upon the second variation theory. The steepest descent method was developed for a Mayer problem of optimal control, with free final state and fixed terminal times. Terminal constraints on t
J. Aerosp. Technol. Manag.. Publicado em: 2012-06
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7. Integrating Ridge-type regularization in fuzzy nonlinear regression
In this paper, we deal with the ridge-type estimator for fuzzy nonlinear regression models using fuzzy numbers and Gaussian basis functions. Shrinkage regularization methods are used in linear and nonlinear regression models to yield consistent estimators. Here, we propose a weighted ridge penalty on a fuzzy nonlinear regression model, then select the number
Comput. Appl. Math.. Publicado em: 2012
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8. Variable selection for survival models based on penalized likelihood / Seleção de covariáveis para modelos de sobrevivência via verossimilhança penalizada
Variable selection is an important step when setting a parsimonious model. However, the most popular variable selection techniques, such as the best subset variable selection and the stepwise method, do not take into account inherent stochastic errors in the variable selection step. This work presents a study of alternative procedures to more popular methods
Publicado em: 2009
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9. Métodos de penalidade e barreira para programação convexa semidefinida / Penalty / barrier methods for convex semidefinite programming
This work deals with multiplier methods to solve semidefinite convex programming problems and the analysis of their proprieties based on the proximal point method applied on the dual problem. We focus on a subclass of semidefinite programming problems with affine constraints, for which we study duality relations an conditions for the existence of solutions o
Publicado em: 2009
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10. Derivative-free nonlinear programming / Programação não linear sem derivadas
We propose in this work a derivative-free Augmented Lagrangian algorithm for the general problem of optimization. We consider the method due to Andreani, Birgin, Martínez and Schuverdt, eliminating the derivative computations in the algorithm by making suitable modifications on the stopping criterion. The good theoretical results of the method were mantaine
Publicado em: 2009
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11. Study and implementation of augmented lagrangian and modified barrier methods / Estudo e implementação dos metodos da lagrangeana aumentada e da barreira modificada
In this work we analyze and compare extensions of traditional penalty methods: augmented Lagrangian and modified logarithmic barrier methods. The penalties may be classified as external and internal or penalty and barrier. The externa I penaJty method generates a sequence of unfeasible solutions and the internal penalty method produces a sequence of feasible
Publicado em: 2008
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12. Numerical investigation of the flow around a stationary cylinder. / Estudo numérico do escoamento ao redor de um cilindro fixo.
In this work, the incompressible flow around a stationary cylinder is investigated by using the Finite Element Method. Two-dimensional simulations in time domain have been carried out, with Reynolds number varying from 100 to 600, using non-structured meshes with triangular elements. The aim of this work is to analyze the efficiency of Penalty Methods, which
Publicado em: 2007