Evaluation of multi-objective optimization approaches for solving green supply chain design problems

M Kadzinski, TP Tervonen, MK Tomczyk, Rommert Dekker

Research output: Contribution to journalArticleAcademicpeer-review

41 Citations (Scopus)

Abstract

This paper evaluates the applicability of different multi-objective optimization methods for environmentally conscious supply chain design. We analyze a case study with three objectives: costs, CO2 and fine dust (also known as PM – Particulate Matters) emissions. We approximate the Pareto front using the weighted sum and epsilon constraint scalarization methods with pre-defined or adaptively selected parameters, two popular evolutionary algorithms, SPEA2 and NSGA-II, with different selection strategies, and their interactive counterparts that incorporate Decision Maker?s (DM?s) indirect preferences into the search process. Within this case study, the CO2 emissions could be lowered significantly by accepting a marginal increase of costs over their global minimum. NSGA-II and SPEA2 enabled faster estimation of the Pareto front, but produced significantly worse solutions than the exact optimization methods. The interactive methods outperformed their a posteriori counterparts, and could discover solutions corresponding better to the DM preferences. In addition, by adjusting appropriately the elicitation interval and starting generation of the elicitation, the number of pairwise comparisons needed by the interactive evolutionary methods to construct a satisfactory solution could be decreased.
Original languageEnglish
Pages (from-to)168-184
Number of pages17
JournalOmega
Volume68
Issue numberApril
DOIs
Publication statusPublished - 2017

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