Scale Free Networks 无尺度网络
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Scale-free_network_zh.png/600px-Scale-free_network_zh.png大部分的节点之和很少的节点链接,而这些关键节点称之为Hub和connecter,即枢纽和节点。
Scale Free - Many small nodes held together by a few hubs
Robust Scale Free Networks
在random网络中,一些node失效将会很容易的将网络变成一块块isolated 和 non-communicating network。但是在一个Scale Free Network中即使减少了80%的node,剩下的20%依然相互连接。
但是很怕有组织的攻击,对这些关键节点进行网络攻击。
Run-away internet
Tor 网络等
Six degrees of separation
find the average distance between any two people in US
Emergent Behavior
Is a Behavior of a system that does not depend on its individual parts, but on their relationships to one anothers. And the Emergent behavior cannot be predicted by examination of a system's individual parts
即,一种系统的行为,不依赖于各个部分,而是他们彼此之间的relationship。所以说我们通过检查各个部分无法预测紧急行为。
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