为提高传统订阅/发布系统分发态势的针对性与及时性,提出了一种基于内容的代理自主动态演化订阅的方法。该方法通过将带参数函数来作为谓词,使系统通过自主计算函数完成订阅更新,提高订阅效率。还给出了一种将该方法引入现存订阅/发布系统的方案及处理流程;最后在某战场态势信息发布/订阅系统上与传统重订阅方法进行对比实验,实验结果显示,该算法在三次独立重复实验中,消息推送及时性与精确性均优于传统方法,从用户需求变更到接收到消息的平均时间减少了30.2%,同时减少了16.3%的错误推送消息数。

In order to improve the accuracy and timeliness of the traditional subscription/publish system distribution situation,this paper propose a content-based brokers dynamic evolution subscription method.The algorithm uses a parameter function as a predicate to make the system perform subscription update through the autonomic compute function By taking the parameter function as the predicate, the system completes the subscription update through the independent computing function and improves the subscription efficiency.This paper also presents a scheme and process for introducing the algorithm into an existing subscription/publish system;Finally, this paper did a comparative experiment with traditional method on a battlefield situation publish/subscribe system,The experimental results show that the algorithm is superior to the traditional method in the three independent repeated experiments, and the average time of the change from the user demand change to the received message is reduced by 30.2%, and the number of false push messages is reduced by 16.3%.