An extended grey relational analysis based on COPRAS method for sustainable supplier selection in project procurement problems

Seyed Meysam Mousavi | A. Jahangirzadeh | Y. Dorfeshan

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=137835
Date :  2020/07/08
Publish in :    Journal of Quality Engineering and Production Optimization

Link :  http://jqepo.shahed.ac.ir/article_1159.html
Keywords :COPRAS method, GRA method, Grey numbers, Multi-objective optimization model, Project procurement management, Sustainable supplier selection

Abstract :

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The sustainable supplier selection (SSS) problem is an integral part of project procurement management. In this paper, a new extended grey relational analysis (GRA) based on the complex proportional assessment (COPRAS) is applied for SSS problems for using the merits of these two methods simultaneously. Furthermore, a new multi-objective optimization model (MOOM) is developed to obtain the objective weights of criteria. Moreover, to illustrate the uncertainty of real SSS problems and derived uncertainty of experts’ judgments, grey numbers are employed. To reduce the reliance on the experts, a new MOOM is developed for criteria’ weights determination. Finally, the performance of the introduced method is demonstrated by solving a numerical example.