Results 171 to 180 of about 163,780 (214)

Structural design employing a sequential approximation optimization approach

Computers & Structures, 2014
This paper presents an improved sequential approximation optimization (SAO) algorithm that is suitable for structural design optimization tasks. First, an adaptive sampling strategy is proposed to balance between the competence to locate the global optimum and the computation efficiency in the optimization process.
Donghui Wang, Zeping Wu, Yang Fei, Weihua Zhang   +3 more
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Vacuum interrupter optimization technique using sequential approximation method

2015 3rd International Conference on Electric Power Equipment – Switching Technology (ICEPE-ST), 2015
In this paper, we treat the development of vacuum interrupter (VI) design tool including automatic geometry modeling in given parameter values, 3-dimensional electromagnetic calculation and analysis of the results for coil-shaped axial magnetic field (AMF) type VI.
Yong Sung Cho, Hong Kyu Kim
openaire   +1 more source

Sequential multipoint quadratic approximation for numerical optimization

19th AIAA Applied Aerodynamics Conference, 2001
A quadratic approximation for nonlinear functions in a design sub-space is developed in order to realize computational savings in solving numerical optimization problems. Function and gradient information accumulated from multiple design points during the iteration history is used in estimating the reduced Hessian matrix.
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A NEW METHOD OF SEQUENTIAL APPROXIMATE OPTIMIZATION FOR STRUCTURAL OPTIMIZATION PROBLEMS

Engineering Optimization, 1995
Abstract In this paper a new method of sequential approximate optimization is introduced to solve some structural optimization problems. This new method employs a new intermediate variable which has two variable parameters to linearize the objective and constraint functions in terms of the intermediate variable.
ZHENG-DONG MA, NOBORU KIKUCHI
openaire   +1 more source

Improved Approximation Schemes for MNL-Driven Sequential Assortment Optimization

SSRN Electronic Journal, 2019
In this paper, we consider assortment optimization under the sequential Multinomial-Logit (MNL) choice model, recently proposed by Lui et. al. (2019) to capture a multitude of applications, ranging from appointment scheduling in hospitals, restaurants, and fitness centers to product recommendation in e-commerce settings. In this problem, the purchasing
Jacob Feldman, Danny Segev
openaire   +1 more source

Advanced approximations for sequential optimization with discrete material interpolations

Structural and Multidisciplinary Optimization, 2015
The DMO (discrete material optimization) technique is employed in structural synthesis dealing with the selection of a material belonging to a group of candidate materials. It has mainly been employed in the optimization for orientation of layers of composite laminates.
Rafael T. L. Ferreira, José A. Hernandes   +1 more
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Saddlepoint Approximation for Sequential Optimization and Reliability Analysis

Journal of Mechanical Design, 2007
A good balance between accuracy and efficiency is essential for reliability-based design (RBD). For this reason, sequential-loops formulations combined with the first-order reliability method (FORM) are usually used. FORM requires a nonlinear non-normal-to-normal transformation, which may increase the nonlinearity of a probabilistic constraint function
openaire   +1 more source

Sequential approximate optimization in the problem solving environment WBCSim

Proceedings of the 2010 Spring Simulation Multiconference, 2010
This paper presents a data driven, surrogate based optimization algorithm that uses a sequential approximate optimization (SAO) framework and a statistical sampling approach. The biggest concern in using the SAO framework based on statistical sampling is the generation of the required database.
Shubhangi G. Deshpande, Layne T. Watson
openaire   +1 more source

Hypersonic vehicle aerodynamic design using modified sequential approximate optimization

Advances in Space Research, 2019
Abstract Hypersonic vehicles are receiving increased attention within the aerospace community due to their high cruise speed and long-range capabilities. In this paper, a modified Sequential Approximate Optimization method is proposed for an optimized aerodynamic design of a hypersonic vehicle.
Wen-jie Wang, Ze-ping Wu, Dong-hui Wang, Wei-hua Zhang, Kun Zhao, Patrick N. Okolo, Gareth J. Bennett   +6 more
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Improved Sequential Approximate Optimization for Aerodynamic Design Benchmark Problem

2019 IEEE Congress on Evolutionary Computation (CEC), 2019
A modified surrogate-based optimization method based on Sequential Approximate Optimization (SAO) is proposed to purposively improve the efficiency of aerodynamic shape optimization. In this method, a specific initial sampling approach is proposed to obtain the initial sampling set of excellent properties of space-filling and orthogonality in the shape
Wenjie Wang, Zeping Wu, Donghui Wang, Weihua Zhang   +3 more
openaire   +1 more source