Ranking Irregularities when Evaluating Alternatives by Using Some Multi-Criteria Decision Analysis Methods

his chapter first introduces the main issues of multi-criteria decision analysis (MCDA). his involves discussion on some well-known MCDA methods. Next it describes some anking irregularities when some MCDA methods are used. Ranking irregularities occur hen certain manipulations on the structure of a simple MCDA problem are performed. hough a plethora of MCDA methods have been proposed to analyze the data of a decision roblem and rank the alternatives, often times different MCDA methods may yield different nswers for exactly the same problem. There is no exact way to know which method gives the ight answer. This situation leads to the question of how to evaluate the performance of ifferent MCDA methods. To partially answer this question, three test criteria based on some ast related studies are presented.