Snijders Tom A B, Lomi Alessandro, Torló Vanina Jasmine
Department of Statistics and Department of Politics and International Relations University of Oxford Department of Sociology University of Groningen.
Soc Networks. 2013 May;35(2):265-276. doi: 10.1016/j.socnet.2012.05.005.
We propose a new stochastic actor-oriented model for the co-evolution of two-mode and one-mode networks. The model posits that activities of a set of actors, represented in the two-mode network, co-evolve with exchanges and interactions between the actors, as represented in the one-mode network. The model assumes that the actors, not the activities, have agency. The empirical value of the model is demonstrated by examining how employment preferences co-evolve with friendship and advice relations in a group of seventy-five MBA students. The analysis shows that activity in the two-mode network, as expressed by number of employment preferences, is related to activity in the friendship network, as expressed by outdegrees. Further, advice ties between students lead to agreement with respect to employment preferences. In addition, considering the multiplexity of advice and friendship ties yields a better understanding of the dynamics of the advice relation: tendencies to reciprocation and homophily in advice relations are mediated to an important extent by friendship relations. The discussion pays attention to the implications of this study in the broader context of current efforts to model the co-evolutionary dynamics of social networks and individual behavior.
我们提出了一种新的面向参与者的随机模型，用于双模式和单模式网络的共同演化。该模型假定，双模式网络中所代表的一组参与者的活动，与单模式网络中所代表的参与者之间的交流和互动共同演化。该模型假设具有能动性的是参与者，而非活动。通过研究七十五名工商管理硕士（MBA）学生群体中就业偏好如何与友谊及建议关系共同演化，证明了该模型的实证价值。分析表明，双模式网络中的活动，以就业偏好数量来表示，与友谊网络中的活动，以出度来表示，是相关的。此外，学生之间的建议关系导致在就业偏好方面达成一致。此外，考虑建议和友谊关系的多重性能够更好地理解建议关系的动态变化：建议关系中的互惠倾向和同质性在很大程度上由友谊关系调节。讨论关注了本研究在当前对社会网络和个体行为共同演化动态建模的更广泛努力背景下的意义。
