An integrated approach for mobile phone selection

Fuzzy quality function deployment (QFD) approach has been widely applied to transform customer requirements into products or services because fuzzy numbers enable to make consistent decisions in uncertain environment to decision makers. This paper proposes to use interval type-2 fuzzy (IT2F) numbers in the development of a novel fuzzy QFD approach. The developed interval type-2 fuzzy number based QFD approach utilizes interval type-2 fuzzy sets to define the correlations among customer requirements (CRs); the relations between CRs and design requirements (DRs); the correlations among DRs, the weights of DRs. There is no paper about integrating QFD approach and IT2F set in the literature. IT2F numbers ensure us more information than type-1 fuzzy numbers to describe the fuzziness and the uncertainty of the real life world. In addition, TOPSIS (Technique for Order Performance by Similarity to Ideal Solution) method based on interval type-2 trapezoidal fuzzy (IT2TrF) is utilized to select the best mobile phone. Finally, the proposed approach has been implemented to a mobile phone selection in order to test its validity

Keywords:

Quality function deployment , fuzzy logic , TOPSIS , interval type-2 fuzzy number , mobile phone selection