Nonpreferential Attachment Leads to Scale-Free or Not

Figure 1

Comparison of degree distributions obtained by a simulation experiment, real network, and iteration estimation. (a–d) Degree distribution in different stages of simulation evolution; (e–h) Degree distribution in real network, data from online dictionary entry network [45], adolescent social friend network [35], publication citation network [15], and Bible vocabulary network [46]; (i–l) Degree distribution of different evolutionary stages given by the iterative estimation, (l) Degree distribution obtained using the three estimation methods.

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