Similarity comparison is carried out when the most similar
case is searched. Different colors indicate different comparison
contents. The value represents the similarity to the new patient;
the longer, the more similar. It is determined by two factors: one
is the respective similarity, scoring from 0 totally different to 1
the same, and the content weight among all the comparing
contents. When all the standards are same, the last score would
be 1. Take Fig. 7 for example, if the omitted patient cases are less
similar than the patient case 4, then case 4 is the most similar
case and its treatment strategy will be taken as an important
reference