CAJ | 학술논문

　　在社会生活中，存在大量的用户之间相互影响相互协调并做出决策的事例，具有广泛的应用。深入研究了基于平均场理论的复杂社会网络中行为扩散模式。设计了特定的扩散模型，该模型考虑了采用某行为的邻居节点绝对数目、相对比率以及节点的总邻居数目对该节点选择行为的影响。采用平均场理论对扩散过程进行分析，研究了网络结构对行为扩散的影响，从理论上得出了如何选择门限值使新行为能够在社会网络中大规模传播成为可能。
　　재사회생활중，존재대량적용호지간상호영향상호협조병주출결책적사례，구유엄범적응용。심입연구료기우평균장이론적복잡사회망락중행위확산모식。설계료특정적확산모형，해모형고필료채용모행위적린거절점절대수목、상대비솔이급절점적총린거수목대해절점선택행위적영향。채용평균장이론대확산과정진행분석，연구료망락결구대행위확산적영향，종이론상득출료여하선택문한치사신행위능구재사회망락중대규모전파성위가능。
In our everyday social life, there exist many scenarios that users are affected by each other, and decisions are made collaboratively. This paper deeply investigates the behavior diffusion model and diffusion process in social network, based on mean-field theory. A specific diffusion model is desiged that can accommodate the impact of three factors on user’s probability of adopting one specific behavior:the absolute number and the ratio of neighbors adopting the behavior and the number of her total neighbors. Based on mean-field theory, the diffusion process is analytically provided, and the effect of network structure on behavior diffusion is also given. The necessary condition(critical threshold)for widespread diffusion is analyzed. The simula-tion results verify the theoretical analysis.