Customer requirement prioritization on QFD: a new proposal based on the generalized Yagers algorithm
The focus of this paper is on the prioritization of customer requirements (CRs) in the quality function deployment (QFD) process. There are numerous techniques for this task, which are based on different types of judgements (e.g., in the form of preference orderings, relative importance ratings, paired comparisons), generally collected by questionnaires/interviews. Unfortunately, many of these techniques violate some properties of the scales on which judgements are defined and/or are not flexible and user-friendly for respondents. This paper introduces a prioritization technique based on a recent algorithmdenominated as generalized Yagers algorithmaimed at fusing the preference orderings by multiple respondents into a single ordering. This technique can be applied even when (1) some CRs are tied or omitted in the individual preference orderings, and (2) respondents have a hierarchical importance ranking. Also, the procedure is automatable and relatively robust and provides a solution which is consistent with the preference orderings. The description is supported by a realistic application example, concerning the prioritization of QFDs CRs in the design of an aircraft seat.
customer requirements prioritization qfd preference ordering relative importance ratings generalized yagers algorithm (gya) fusion