关键词: 发布/订阅, 事件代理, 分组拓扑, 自配置

Abstract: In order to optimize data transmission performance among nodes in the network of active publish/subscribe system and improve stability of the system，according to the characters of active publish/subscribe system，a grouped topology model based on event brokers is presented.The main idea of this method is using multi-level division，first，the brokers which belong to the same matching threshold interval are classified to the same group based on matching degree of event topic，and then event brokers of the same topic with similar attributes are classified to the subgroups.Self-reconfiguration is discussed，which realizes creation of groups and the management of brokers joining and removing dynamically.Simulation experiments show that grouped topology model can reduce the number of average transmission between brokers，expenses of topology maintenance and improve robustness of the system.

Key words: publish/subscribe, event brokers, grouped topology, self-reconfiguration