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An improved firefly algorithm for global continuous optimization problems
Expert Systems with Applications ( IF 7.5 ) Pub Date : 2020-02-26 , DOI: 10.1016/j.eswa.2020.113340
Jinran Wu , You-Gan Wang , Kevin Burrage , Yu-Chu Tian , Brodie Lawson , Zhe Ding

Global continuous optimization is populated by its implementation in many real-world applications. Such optimization problems are often solved by nature-inspired and meta-heuristic algorithms, including the firefly algorithm (FA), which offers fast exploration and exploitation. To further strengthen FA’s search for global optimum, a Levy-flight FA (LF-FA) has been developed through sampling from a Levy distribution instead of the traditional uniform one. However, due to its poor exploitation in local areas, the LF-FA does not guarantee fast convergence. To address this problem, this paper provides an adaptive logarithmic spiral-Levy FA (AD-IFA) that strengthens the LF-FA’s local exploitation and accelerates its convergence. Our AD-IFA is integrated with logarithmic-spiral guidance to its fireflies’ paths, and adaptive switching between exploration and exploitation modes during the search process. Experimental results show that the AD-IFA presented in this paper consistently outperforms the standard FA and LF-FA for 29 test functions and 6 real cases of global optimization problems in terms of both computation speed and derived optimum.



中文翻译:

全局连续优化问题的改进萤火虫算法

全局连续优化是由其在许多实际应用程序中的实现组成的。此类优化问题通常通过自然启发和元启发式算法(包括萤火虫算法(FA))来解决,该算法可提供快速的探索和利用。为了进一步加强FA对全球最优飞机的搜寻,已经通过从Levy分布中采样而不是传统的统一模式开发了Levy-flight FA(LF-FA)。但是,由于LF-FA在当地的开发不充分,因此不能保证快速收敛。为了解决这个问题,本文提供了一种自适应对数螺旋征税FA(AD-IFA),可以加强LF-FA的局部开发并加速其收敛。我们的AD-IFA与萤火虫的飞行路径集成了对数螺旋引导,搜索过程中在探索和开发模式之间进行自适应切换。实验结果表明,本文提出的AD-IFA在29个测试功能和6个实际全局优化问题的实际情况方面,在计算速度和推导的最优方面均始终优于标准FA和LF-FA。

更新日期:2020-02-26
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