Abstract:

Multi-criteria decision-making methods are used to solve decision-making problems in many areas in line with certain criteria, to rank alternatives and to select the best alternative. More than one system can be used in the same selection or sorting problems and the results of the methods used may vary. In such a case, presenting the results as a common solution would be easier to decide. In this study, ranking results obtained from TOPSIS, GIA, VIKOR and MOORA reference point methods that serve the same purpose were integrated with Copeland method and were made into a single ranking. The integrated result was compared with the results obtained from COPRAS, MOORA and ARAS methods and the reliability was tested. In the methods, 23 OECD countries were taken as alternatives. Five generally accepted criteria from the World Bank database were used as benchmarks for the ranking of these countries. The results of the highly correlated TOPSIS, GIA and VIKOR methods have the same high correlation with the integrated results. The MOORA Reference Point method, which has a low adaptation between the methods, has low alignment with the integrated ranking results. At the same time, the results obtained from COPRAS, MOORA and ARAS methods not included in the integration were found to be highly compatible with the calculated integrated order. Therefore, it can be said that the integration process approximates the methods that sort according to the specific reference value by the methods that are not affected by the specific reference value. Keywords: Multi Criteria Decision Making, Integration, Normalization, COPELAND Method, OECD JEL Classification: C02, C44

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