Abstract:
Sustainable development is one of the most important preconditions for preserving
resources and balanced functioning of a complete supply chain in different areas. Taking into
account the complexity of sustainable development and a supply chain, different decisions have to
be made day-to-day, requiring the consideration of different parameters. One of the most important
decisions in a sustainable supply chain is the selection of a sustainable supplier and, often the applied
methodology is multi-criteria decision-making (MCDM). In this paper, a new hybrid MCDM model
for evaluating and selecting suppliers in a sustainable supply chain for a construction company
has been developed. The evaluation and selection of suppliers have been carried out on the basis
of 21 criteria that belong to all aspects of sustainability. The determination of the weight values of
criteria has been performed applying the full consistency method (FUCOM), while a new rough
complex proportional assessment (COPRAS) method has been developed to evaluate the alternatives.
The rough Dombi aggregator has been used for averaging in group decision-making while evaluating
the significance of criteria and assessing the alternatives. The obtained results have been checked
and confirmed using a sensitivity analysis that implies a four-phase procedure. In the first phase, the
change of criteria weight was performed, while, in the second phase, rough additive ratio assessment
(ARAS), rough weighted aggregated sum product assessment (WASPAS), rough simple additive
weighting (SAW), and rough multi-attributive border approximation area comparison (MABAC)
have been applied. The third phase involves changing the parameter r in the modeling of rough
Dombi aggregator, and the fourth phase includes the calculation of Spearman’s correlation coefficient
(SCC) that shows a high correlation of ranks.
