*5.3. Result Analysis*

In the above two examples, the health status of the bus of control system and engine is assessed by the proposed model, where the input indicators reference grades disaccord with the assessment result grades are fully considered, and include three situations: (1) the indicators reference grades are more than the assessment result grades, (2) the

input indicators reference grades are less than the assessment result grades, (3) above cases exist simultaneously. According to the above comparative research, it can be proved that the proposed method is able to combine the advantage of both data-based methods and qualitative knowledge-based method, providing an interpretable and accurate assessment result for decision-makers.

In fact, those two examples provide a general process to solve the inconsistent problem between input and output. More importantly, the proposed method can not only be applied in these two cases, but also can be extended to the dynamic assessment and other multiple indicators of health assessment.
