秘鲁共和国国会立法共同提案网络中随时间变化的社区结构
Time-dependent community structure in legislation cosponsorship networks in the Congress of the Republic of Peru
摘要：
我们研究社区结构的时间依赖性的立法共同赞助网络在秘鲁国会，我们简要地比较他们在美国参议院的立法共同赞助网络。为了研究这些立法机构，我们采用了多层表示的时间网络中，立法者在每一层中相互连接的权重，这是基于有多少法案，他们共同发起。然后，我们使用多层模块化最大化来检测这些网络中的社区。从我们的计算中，我们能够捕捉到秘鲁国会在2006- 2011年期间的权力转移。例如，我们观察到出现的“机会主义者”，谁从一个社区切换到另一个，以及凝聚力的立法社区，其最初的组成部分立法者从来没有改变社区。有趣的是，许多机会属于在国会赢得多数席位的集团。
英文摘要：
We study community structure in time-dependent legislation cosponsorship networks in the Peruvian Congress, and we compare them briefly to legislation cosponsorship networks in the US Senate. To study these legislatures, we employ a multilayer representation of temporal networks in which legislators in each layer are connected to each other with a weight that is based on how many bills they cosponsor. We then use multilayer modularity maximization to detect communities in these networks. From our computations, we are able to capture power shifts in the Peruvian Congress during 2006--2011. For example, we observe the emergence of 'opportunists', who switch from one community to another, as well as cohesive legislative communities whose initial component legislators never change communities. Interestingly, many of the opportunists belong to the group that won the majority in Congress.
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