Table 9.

Cost comparison of each method.

Method	Need assess the occurrence frequency level and loss severity level of each indicator	Need assess the occurrence frequency level and loss severity level of each class	Need calculate the membership of each indicator	Need calculate the fuzzy entropy and trusted state matrix	Need calculate the service uncertainty	Need calculate the weight judgment matrix of each indicator	Need calculate the weight judgment matrix of each class	Need check the consistency of the assessment results	Need fuse the assessment results of multiple experts
Information entropy	Yes	No	No	No	Yes	No	No	No	No
AHP	No	No	No	No	No	Yes	Yes	Yes	No
Risk matrix	Yes	Yes	No	No	No	No	No	No	No
D-S evidence theory	Yes	No	No	No	No	No	No	No	Yes
The method of this paper	Yes	No	Yes	Yes	No	No	No	No	No