A fuzzy-logic based group decision-making approach in quality function deployment (QFD) is proposed in this study to devise the product improvement strategy for companies. We extend the QFD methodology by introducing a new group decisionmaking approach that takes multiple preferences formats into account and by fusing different expressions into one uniform group decision by means of fuzzy set theory. Finally, a case study for "Portable Entertainment and Game Systems" design is given to demonstrate the potential of the proposed approach.
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