Determining the importance weights for the customer requirements in QFD using a fuzzy AHF with an extent analysis approach

Chun Kit Kwong, H. Bai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

344 Citations (Scopus)

Abstract

In the Quality Function Deployment (QFD) process, determining the importance weights for the customer requirements is an essential and crucial process. The Analytic Hierarchy Process (AHP) has been used to determine the importance weights for product planning, but this has occurred mainly in crisp (non-fuzzy) decision applications. However, human judgment on the importance of customer requirements is always imprecise and vague. To make up for this deficiency in the AHP, a fuzzy AHP with an extent analysis approach is proposed to determine the importance weights for the customer requirements. In the method, triangular fuzzy numbers are used for the pairwise comparison of a fuzzy AHP. By using the extent analysis method and the principles for the comparison of fuzzy numbers, one can derive the weight vectors. The new approach can improve the imprecise ranking of customer requirements inherited from studies based on the conventional AHP. Furthermore, the fuzzy AHP with extent analysis is simple and easy to implement to prioritize customer requirements in the QFD process compared with the conventional AHP. This paper uses an example of a hair dryer design to illustrate the proposed approach.
Original languageEnglish
Pages (from-to)619-626
Number of pages8
JournalIIE Transactions (Institute of Industrial Engineers)
Volume35
Issue number7
DOIs
Publication statusPublished - 1 Jul 2003

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Management Science and Operations Research

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