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and the '''expected force''', derived from the expected value of the [[force of infection]] generated by a node.<ref name="Lawyer2015"/>
and the '''expected force''', derived from the expected value of the [[force of infection]] generated by a node.<ref name="Lawyer2015"/>
Both of these measures can be meaningfully computed from the structure of the network alone.
Both of these measures can be meaningfully computed from the structure of the network alone.
===节点影响力===
{{Main|Node influence metric}}
中心性度量的局限性促使了两种更一般的度量的发展。
两个例子是
'''可达性'''，它利用随机行走的多样性去度量从一个节点出发到网络其余部分的可到达性，<ref name="Travencolo2008">{{ cite journal| last1=Travençolo |first1=B. A. N. |last2=da F. Costa| first2 =L.| title=Accessibility in complex networks| journal=Physics Letters A| year=2008|volume=373|issue=1|pages=89–95 |doi=10.1016/j.physleta.2008.10.069 |bibcode=2008PhLA..373...89T }}</ref>
以及'''期望力'''，从一个节点的[[感染力]]的期望得到。<ref name="Lawyer2015"/>
这两种度量都可以仅从网络的结构中有意义地计算出来。
== Network models ==
== Network models ==