An improved firefly algorithm with harmony search scheme for optimization of water distribution systems

作者：Tahershamsi A; Kaveh A^*; Sheikholeslami R; Kazemzadeh Azad Sina

来源：Scientia Iranica, 2014, 21(5): 1591-1607.

• Meta-heurigtics
• Firefly algorithm
• Harmony search
• Optimum design
• Water distribution systems

In this study, a new hybrid method based on Firefly Algorithm (FA) and Harmony Search (HS) techniques is presented for solving the least-cost design problem of Water Distribution Systems (WDS). This algorithm is designed to improve the performance of the FA as a recently developed meta-heuristic that mimics the natural behaviour of fireflies. The use of such a nature-inspired optimization method to solve the optimal design problem of WDS needs particular modifications to produce high quality solutions. Therefore, a modification is proposed to the movement stage of artificial fireflies, and based on the HS strategy a memory is utilized to save a number of the best solutions. Another improvement in this algorithm includes the addition of pitch adjustment operation in the FA as a mutation operator. The presented method is applied to the optimal design of some well-known benchmark problems taken from literature, and the results confirm its validity. In addition, a sensitivity analysis is performed on the parameters of the algorithm.

• 出版日期2014-10