“…Many studies present methodological refinements of the QFD method (e.g., Brad, 2009;Chaudhuri & Bhattacharyya, 2009;Hoyle & Chen, 2009;Iranmanesh & Thomson, 2008;Ji, Jin, Wang, & Chen, 2014), often by developing ways for using fuzzy logic in combination with QFD (e.g., Bai & Kwong, 2003;Chen, Fung, & Tang, 2005;Chen & Ngai, 2008;Fung, Tang, Tu, & Wang, 2002;Karsak, 2004). These studies are typically based on simulation of results and perhaps showing an illustrative example application.…”