二部协作网络中的相关性
Correlations in Bipartite Collaboration Networks
摘要:
合作网络作为一个例子,不断增长的二分网络。这些以前已经观察到的结构,如最近邻度之间的正相关性。然而,对这一现象的起源和增长动力缺乏详细的了解。这两个都是经验分析和模拟使用各种模型。一个新的,纳入经验必要的成分,如二分性和次线性优先附件。这一点,以及最近提出的团队组装模型,都大致符合一些经验观察,并在其他几个方面失败。
英文摘要:
Collaboration networks are studied as an example of growing bipartite networks. These have been previously observed to have structure such as positive correlations between nearest-neighbour degrees. However, a detailed understanding of the origin of this phenomenon and the growth dynamics is lacking. Both of these are analyzed empirically and simulated using various models. A new one is presented, incorporating empirically necessary ingredients such as bipartiteness and sublinear preferential attachment. This, and a recently proposed model of team assembly both agree roughly with some empirical observations and fail in several others.
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