SaaS Service Combinatorial Trustworthiness Measurement Method Based on Markov Theory and Cosine Similarity

Table 6

AHP method.

AHP method	Descriptions
Ease of use	It has high requirements for the level clarity of the model and the rationality of expert scoring. For complex systems, it is difficult to obtain a correct, clear, and complete hierarchical model at one time. It is difficult to find multiple field experts at one time. Therefore, the ease of use is not high.
Objectivity	It is a subjective weighting method with strong interpretability and objective calculation process, but the input data is highly subjective. Therefore, its objectivity is not high.
Versatility	It is generally applicable to various measurement and evaluation scenarios, so it has strong universality.
Functionality	Each measurement and evaluation operation can only measure a certain model or aspect, so its functionality is weak.
Costs	It is necessary to establish an evaluation hierarchy model and hire domain experts, which has high time and economic cost.