A common property of many large networks is that the vertex degrees follow a scale-free power-law distribution, the BA model features two generic mechanisms: the networks expanding and the pref.
实际网络中节点分布的一个广泛特征是度的无标度幂率分布，BA模型认为形成这种特征的两个主要因素是网络增长和节点间的偏好连接。
It is found that different types of real-world networks the vertex vanishment follows a strong degree preference, the vanishment rate of degrees also follows a scale-free power-law distribution.
通过对不同类型的实际网络中节点消退情况的统计分析发现，实际网络中节点的消退有很强的度偏好，不同度的节点的消退率同样具有幂率分布特征。
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