Riolo C S, Koopman J S, Chick S E
The Department of Epidemiology, University of Michigan, 109 Observatory Street, Ann Arbor, MI 48109-2029, USA.
J Urban Health. 2001 Sep;78(3):446-57. doi: 10.1093/jurban/78.3.446.
This article describes new methods to characterize epidemiologic contact networks that involve links that are being dynamically formed and dissolved. The new social network measures are designed with an epidemiologic interpretation in mind. These methods are intended to capture dynamic aspects of networks related to their potential to spread infection. This differs from many social network measures that are based on static networks. The networks are formulated as transmission graphs (TGs), in which nodes represent relationships between two individuals and directed edges (links) represent the potential of an individual in one relationship to carry infection to an individual in another relationship. Network measures derived from transmission graphs include "source counts," which are defined as the number of prior relationships that could potentially transmit infection to a particular node or individual.
本文介绍了表征流行病学接触网络的新方法,这些网络涉及正在动态形成和解散的联系。新的社会网络测量方法在设计时考虑到了流行病学解释。这些方法旨在捕捉网络与感染传播潜力相关的动态方面。这与许多基于静态网络的社会网络测量方法不同。这些网络被构建为传播图(TGs),其中节点代表两个个体之间的关系,有向边(链接)代表一种关系中的个体将感染传播给另一种关系中的个体的可能性。从传播图得出的网络测量包括“源计数”,其定义为可能将感染传播给特定节点或个体的先前关系的数量。