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Water 2017, 9(12), 996; https://doi.org/10.3390/w9120996

A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems

1
Industrial and Systems Engineering Graduate Program (PPGEPS), Pontifical Catholic University of Parana (PUCPR), Curitiba 80215-901, Brazil
2
Department of Hydraulic and Environmental Engineering, Universitat Politènica de Valècia, 46022 Valencia, Spain
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 22 November 2017 / Accepted: 24 November 2017 / Published: 19 December 2017
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Abstract

Dealing with real world engineering problems, often comes with facing multiple and conflicting objectives and requirements. Water distributions systems (WDS) are not exempt from this: while cost and hydraulic performance are usually conflicting objectives, several requirements related with environmental issues in water sources might be in conflict as well. Commonly, optimisation statements are defined in order to address the WDS design, management and/or control. Multi-objective optimisation can handle such conflicting objectives, by means of a simultaneous optimisation of the design objectives, in order to approximate the so-called Pareto front. In such algorithms it is possible to embed preference handling mechanisms, with the aim of improving the pertinency of the approximation. In this paper we propose two mechanisms to handle such preferences based on the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) and PROMETHEE (Preference Ranking Organisation METHod for Enrichment of Evaluations) methods. Performance evaluation on two benchmarks validates the usefulness of such approaches according to the degree of flexibility to capture designers’ preferences. View Full-Text
Keywords: water distribution systems; multi-objective optimisation; evolutionary multi-objective optimisation water distribution systems; multi-objective optimisation; evolutionary multi-objective optimisation
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Reynoso-Meza, G.; Alves Ribeiro, V.H.; Carreño-Alvarado, E.P. A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems. Water 2017, 9, 996.

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