However, in order to handle this kind of fuzzy MCDM problem
in terms of the critical factor segment, this study developed
the fuzzy DEMATEL method. This proposed method extends the
DEMATEL method by applying both linguistic variables and a fuzzy
aggregation method, so that it can effectively deal with vague and
imprecise judgments in group decision-making. In particular, this
method can also successfully divide a set of complex factors into a
cause group and an effect group, as well as giving a visible causal
diagram. Through the causal diagram, the complexity of a problem
is easier to capture, whereby profound decisions can be made