人物:如何找到最大的社区? [英] R igraph: how to find the largest community?

问题描述

我使用fastgreedy.community生成一个社区对象，其中包含15个社区.但是如何提取这15个社区中最大的社区?

I use fastgreedy.community to generate a community object, which contains 15 communities. But how can I extract the largest community among these 15 communities?

Community sizes
1    2    3    4    5    6    7    8    9   10   11   12   13   14 
1862 1708  763  974 2321 1164  649 1046    2    2    2    2    2    2 
15 
2 

在此示例中，我想提取社区5以便进一步使用.谢谢！

In this example, I want to extract the community 5 for further use. Thanks!

推荐答案

假定您的社区对象命名为 community.object ， which(membership(community.object)== x)提取社区 x 中顶点的索引.如果需要最大的社区，可以将 x 设置为 which.max(sizes(community.object)).最后，您可以使用 ductive.subgraph 将特定社区提取到单独的图形中:

Assuming that your community object is named community.object, which(membership(community.object) == x) extracts the indices of the vertices in community x. If you want the largest, community, you can set x to which.max(sizes(community.object)). Finally, you can use induced.subgraph to extract that particular community into a separate graph:

> x <- which.max(sizes(community.object))
> subg <- induced.subgraph(graph, which(membership(community.object) == x))

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