Water cycle algorithm – A novel metaheuristic optimization method for solving constrained engineering optimization problems

2012 ◽  
Vol 110-111 ◽  
pp. 151-166 ◽  
Author(s):  
Hadi Eskandar ◽  
Ali Sadollah ◽  
Ardeshir Bahreininejad ◽  
Mohd Hamdi
Keyword(s):  
Optimization Problems ◽  
Water Cycle ◽  
Optimization Method ◽  
Engineering Optimization ◽  
Water Cycle Algorithm ◽  
Metaheuristic Optimization ◽  
Engineering Optimization Problems

A novel chaotic bat algorithm based on catfish effect for engineering optimization problems

2019 ◽  
Vol 36 (5) ◽  
pp. 1744-1763
Author(s):  
Wensheng Xiao ◽  
Qi Liu ◽  
Linchuan Zhang ◽  
Kang Li ◽  
Lei Wu
Keyword(s):  
Numerical Experiment ◽  
Real World ◽  
Optimization Problems ◽  
Bat Algorithm ◽  
Optimization Method ◽  
Engineering Optimization ◽  
Local Optima ◽  
Content Type ◽  
Engineering Design Problems ◽  
Engineering Optimization Problems

PurposeBat algorithm (BA) is a global optimization method, but has a worse performance on engineering optimization problems. The purpose of this study is to propose a novel chaotic bat algorithm based on catfish effect (CE-CBA), which can effectively deal with optimization problems in real-world applications.Design/methodology/approachIncorporating chaos strategy and catfish effect, the proposed algorithm can not only enhance the ability for local search but also improve the ability to escape from local optima traps. On the one hand, the performance of CE-CBA has been evaluated by a set of numerical experiment based on classical benchmark functions. On the other hand, five benchmark engineering design problems have been also used to test CE-CBA.FindingsThe statistical results of the numerical experiment show the significant improvement of CE-CBA compared with the standard algorithms and improved bat algorithms. Moreover, the feasibility and effectiveness of CE-CBA in solving engineering optimization problems are demonstrated.Originality/valueThis paper proposed a novel BA with two improvement strategies including chaos strategy and catfish effect for the first time. Meanwhile, the proposed algorithm can be used to solve many real-world engineering optimization problems with several decision variables and constraints.

Optimized Radial Basis Function Metamodel for Expensive Engineering Design Optimization

2012 ◽  
Author(s):  
Lv Wang ◽  
Teng Long ◽  
Lei Peng ◽  
Li Liu
Keyword(s):  
Optimization Design ◽  
Optimization Problems ◽  
Computational Cost ◽  
Optimization Method ◽  
Kernel Functions ◽  
Optimization Approach ◽  
Engineering Optimization ◽  
Global Approximation ◽  
Approximation Accuracy ◽  
Engineering Optimization Problems

At the aim of alleviating the computational burden of complicated engineering optimization problems, metamodels have been widely employed to approximate the expensive blackbox functions. Among the popular metamodeling methods RBF metamodel well balances the global approximation accuracy, computational cost and implementation difficulty. However, the approximation accuracy of RBF metamodel is heavily influenced by the width factors of kernel functions, which are hard to determine and actually depend on the numerical behavior of expensive functions and distribution of samples. The main contribution of this paper is to propose an optimized RBF (ORBF) metamodel for the purpose of improving the global approximation capability with an affordable extra computational cost. Several numerical problems are used to compare the global approximation performance of the proposed ORBF metamodeling methods to determine the promising optimization approach. And the proposed ORBF is also adopted in adaptive metamodel-based optimization method. Two numerical benchmark examples and an I-beam optimization design are used to validate the adaptive metamodel-based optimization method using ORBF metamodel. It is demonstrated that ORBF metamodeling is beneficial to improving the optimization efficiency and global convergence capability for expensive engineering optimization problems.

scholarly journals Improved Salp Swarm Algorithm with Simulated Annealing for Solving Engineering Optimization Problems

Symmetry ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1092
Author(s):  
Qing Duan ◽  
Lu Wang ◽  
Hongwei Kang ◽  
Yong Shen ◽  
Xingping Sun ◽  
...  
Keyword(s):  
Simulated Annealing ◽  
Optimization Problems ◽  
Chaotic Sequence ◽  
Engineering Optimization ◽  
Exploration And Exploitation ◽  
Salp Swarm Algorithm ◽  
Symmetric Perturbation ◽  
Swarm Algorithm ◽  
Search Capability ◽  
Engineering Optimization Problems

Swarm-based algorithm can successfully avoid the local optimal constraints, thus achieving a smooth balance between exploration and exploitation. Salp swarm algorithm(SSA), as a swarm-based algorithm on account of the predation behavior of the salp, can solve complex daily life optimization problems in nature. SSA also has the problems of local stagnation and slow convergence rate. This paper introduces an improved salp swarm algorithm, which improve the SSA by using the chaotic sequence initialization strategy and symmetric adaptive population division. Moreover, a simulated annealing mechanism based on symmetric perturbation is introduced to enhance the local jumping ability of the algorithm. The improved algorithm is referred to SASSA. The CEC standard benchmark functions are used to evaluate the efficiency of the SASSA and the results demonstrate that the SASSA has better global search capability. SASSA is also applied to solve engineering optimization problems. The experimental results demonstrate that the exploratory and exploitative proclivities of the proposed algorithm and its convergence patterns are vividly improved.

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