Evaluation of the 2008 world economic crisis by the methods of multiple criteria decisions effecting the economic performance of the G20 countries

Nowadays, thepower of a country is measuredbythelevels of economicindicators. Inthisstudy; economicperformance is investigatedbyconsideringthefactthatCompetition is respectivelymadebyeconomicpowerwiththestart of globalisation. Therearelimitedstudies as totheeconomicperformancemeasurementmadewithmulti-criteriadesicionmakingmethods. So in thisstudythesubject of economicperformance has beendiscussed in thesamplingframe of G20 in whichTurkey is included. Thisstudyexaminestheperiodbetween 2006 and 2013, which is thoughttoreflecttheupsanddowns in theeconomyduringthe 2008 worldeconomiccrisis. Theeconomicperformances of the G20 countrieshavebeendeterminedby 9 economiccriteria. The G20 countries' economies, whichhold a largepart of theworldeconomy, havebeenmeasuredbythechanges in the 2008 globalcrisis, andtheeconomic life of thesecountries has beencommented on duringthecrisis.AHP (AnalyticHierarchyProcess) and VIKOR (ViseKriterijumskaOptimizacija I KompromisnoResenje) methodwereusedformulti-criteriadecisionmaking. Withtheaid of the AHP method, theweightvalueswereassignedtothecriteriaandthebasis of the VIKOR methodwasestablished. The VIKOR method in thestudywasusedtoobtaintheorderingbetweenthealternativesandthecompromisesolution.As a result of theimplementation, the ideal settlementsolutionandtheorder of thealternatives in terms of economicperformancewithinthe G20 countrieswereobtainedandinterpretedseparatelyforeachyearbetween 2006-2013.