Figure 1
From: Categorizing SHR and WKY rats by chi2 algorithm and decision tree

Power-law distribution consists of degree and its counted number. Each state, such as HS, HW, LS and LW, has 20 samples. Plots (A), (B), (C) and (F) are the distribution before chi2 algorithm. In (B), WKY and SHR are plotted without considering the anesthesia factor, and each distribution is deduced from 40 samples. In contrast, plots (D), (E), (G), and (H) are the distribution after chi2 algorithm.