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After reviewing different approaches to achieving such target, this paper introduces the implementation of fuzzification mechanism termed as \u201cFuzzimetric Sets\u201d as a method of defining the minimum and maximum tolerance possibilities within pre-defined fuzzy sets. Decision-making evaluation process would be dependent on the inferred minimum to maximum defuzzified differences (spectrum). Based on this concept, a prototype was built to measure the employee performance level allowing much more flexibility when taking a decision under uncertainty. This application was termed as \u201cFuzzimetric Employee Evaluation System\u201d (FEES). 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