一种多服务代理协作求解模型

针对利用合同网模型在多服务代理之间进行协作求解时存在的问题,提出等级域的概念,并将其引入到合同网中,缩小了协作服务代理的查找范围·同时,为了平衡各个服务代理间的任务负载,避免协作时选取协作服务代理的盲目性,提高系统的吞吐量,还考虑了各服务代理协作时的时间开销问题,建立了基于等级域 时间开销的合同网模型,缓解了过载和轻载现象的发生,并通过仿真程序验证了该模型的有效性·

A Collaborative Service Model for Multi-Agent System

A notion of grade field is presented and introduced into contract net to eliminate the disadvantages of the contract net model so as to solve the problems due to the collaboration among different service agents, thus minimizing the region to search collaborative service agents. Meanwhile, the time consumption for service agents in collaboration is considered to balance their loads, avoid the blindness of selection of anyone of them and increase the throughput of the multiple service agent system. Based on the fusion of grade field and the time consumption, a new model named grade-field-and-time-based contract net model or GT-CNM is developed, which will suppress occurrence of either overload or underload to a certain extent. Simulation results verified the effectiveness of this model.