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Decision Making Using DEMATEL: Avoid the Big Mistake
A.S.M.Touhidul Islam and Shariman Bin Mustafa
Abstract:
Multi Criteria Decision Making, a quite common task in operation management, uses Decision Making Trial and Evaluation Laboratory method widely to identify causal relationships among factors and to draw attention to valuable insights. The scope of this method has reached the manufacturing industry, social activities, farming, financial system, environmental science, energy, and other areas, and has solved numerous practical problems. But the author has found that the results are significantly misleading as and when it is applied with global (or overall) consideration or even elements/category of unequal weights. To show the serious differences in the results misguiding decision makers, an example has been demonstrated in this study. Some previous studies are also presented in this regard. In any case, the result of the Decision Making Trial and Evaluation Laboratory from global calculation and analysis can be corrected if performed based on distinct elements (cluster wise) separately. Grading success or failure factors as per distinct elements of a system and integrating them as per criticality found at the element level, is an added methodology to the existing knowledge of using Decision Making Trial and Evaluation Laboratory. This new approach will help to decide critical factors in a truly holistic way and implement any principles, policies, or system more confidently.
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