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Water 2016, 8(5), 182; doi:10.3390/w8050182

The Efficiency of Setting Parameters in a Modified Shuffled Frog Leaping Algorithm Applied to Optimizing Water Distribution Networks

1
Departamento de Ingeniería y Gestión de la Construcción, Facultad de Ingeniería, Universidad de Talca, Curicó 3340000, Chile
2
Departamento de Ingeniería Hidráulica y Medio Ambiente, Universitat Politècnica de Valencia, Valencia 46022, Spain
3
Facultad de Ingeniería Civil, Universidad Autónoma de Chile, Talca 3460000, Chile
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Franchini
Received: 29 February 2016 / Revised: 22 April 2016 / Accepted: 25 April 2016 / Published: 29 April 2016
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Abstract

This paper presents a modified Shuffled Frog Leaping Algorithm (SFLA) applied to the design of water distribution networks. Generally, one of the major disadvantages of the traditional SFLA is the high number of parameters that need to be calibrated for proper operation of the algorithm. A method for calibrating these parameters is presented and applied to the design of three benchmark medium-sized networks widely known in the literature (Hanoi, New York Tunnel, and GoYang). For each of the problems, over 35,000 simulations were conducted. Then, a statistical analysis was performed, and the relative importance of each of the parameters was analyzed to achieve the best possible configuration of the modified SFLA. The main conclusion from this study is that not all of the original SFL algorithm parameters are important. Thus, the fraction of frogs in the memeplex q can be eliminated, while the other parameters (number of evolutionary steps Ns, number of memeplexes m, and number of frogs n) may be set to constant values that run optimally for all medium-sized networks. Furthermore, the modified acceleration parameter C becomes the key parameter in the calibration process, vastly improving the results provided by the original SFLA. View Full-Text
Keywords: water distribution networks; design; shuffled frog leaping algorithm; optimization water distribution networks; design; shuffled frog leaping algorithm; optimization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mora-Melia, D.; Iglesias-Rey, P.L.; Martínez-Solano, F.J.; Muñoz-Velasco, P. The Efficiency of Setting Parameters in a Modified Shuffled Frog Leaping Algorithm Applied to Optimizing Water Distribution Networks. Water 2016, 8, 182.

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