质疑 Not Scale Free 456(0.49) a2 Super-Weak 431(0.46) Weakest 268(029) 177(0.19) Strong 89(0.10) Strongest 36(0.04) 0.0 0.2 0.4 0.6 0.8 1.0 Fig. 4 Proportion of networks by scale-free evidence category. Bars separate the Super-Weak category from the nested definitions, and from the Not scale free category defined as networks that are neither Weakest or Super-Weak质疑