Fig. 5From: Research of insomnia on traditional Chinese medicine diagnosis and treatment based on machine learningResults of the analysis of the main prescription using hierarchical clustering analysis. The codes in Fig. 5 correspond to the codes in Table 6. The line represents the the main prescription, and the small circle represents the corresponding herb. Frequency of Category 1 is 573, frequency of Category 2 is 312. Frequency of Category 3 is 577, which is the cumulative frequency of all green linesBack to article page