基于Agent-DEVS的应急物资保障多分辨率建模研究

多分辨率(Multi-resolution,MR)建模是复杂自适应系统建模和分布式仿真发展急需解决的现实问题,在分析多分辨率模型组织结构和演化方式的基础上,对Agent-DEVS规范进行扩展,加入多分辨率建模层级和相关元组,建立了MR-Agent-DEVS建模规范。将MR-Agent-DEVS引入应急物资保障的仿真建模,完成了耦合模型与仿真流程设计,以及成员模型与典型消息设计。实验结果表明:MR-Agent-DEVS模型能够仿真应急物资保障行为,较聚合解聚法、视点选择法而言,对分辨率控制的时效性更强,灵活性更大,一致性较好,更有利于降低系统负载;与Agent-DEVS模型相比,虽然多分辨率控制在一定程度上增加了模型复杂度,但两者的执行效率基本相当,从而验证了MR-Agent-DEVS模型的实用性。

Research on Multi-resolution Modeling of Emergency Material Supply Based on Agent-DEVS

Multi-resolution (MR) modeling is a practical problem for complex adaptive system modeling and distributed simulation that need to be solved urgently. On the basis of analyzing the organization structure and evolution way of multi-resolution models, Agent-DEVS is extended by adding multi-resolution modeling level and relevant tuples. MR-Agent-DEVS is presented as a multi-resolution specification. And it is introduced into the modeling and simulation of emergency material supply. Coupling model and simulation flow are designed. And member models and typical messages are proposed. The experimental results show that MR-Agent-DEVS model can simulate the behaviors of emergency material supply and it has more timeliness, greater flexibility, and better consistency than Aggregation and Disaggregation method and Selected Viewpoint method, which is more favorable for reducing the system load. Though the complexity of MR-Agent-DEVS model is increased to an extent because of multi-resolution control, execution efficiencies of MR-Agent-DEVS and Agent-DEVS models are extremely similar, which verifies the practicability of MR-Agent-DEVS model.