Number of defaults caused by random shocks and selective shocks. (a), (c), (e), and (g) correspond respectively to the results of tiered networks, random networks, small-world networks, and scale-free networks in the homogeneous case; (b), (d), (f), and (h) are, respectively, the results of tiered networks, random networks, small-world networks, and scale-free networks in the heterogeneous case. denotes the number of shocked banks in the interbank market, and represents the number of defaults.
