A negotiation interaction model between service agents

Introducing the idea of semantic negotiation into the service-oriented applications enables the service agents to share the service knowledge in the process of service deployment, publication, discovery and composition, and to acquire the autonomy capability and the understanding capability. Through describing the service of the abstract and concrete layers and analyzing the interaction process between service agents, the service agents and their know ledge model which are suitable for service negotiation are presented. Moreover, the method of correcting and updating the belief knowledge between service agents is designed. The roles and behaviors of the service agents in the process of the service negotiation as well as a set of semantic negotiation protocol for service properties are described formally. The experimental results show that the designed knowledge model and the semantic negotiation protocol in service discovery can improve the understanding capability of service agents significantly. With the increase in the quantity of the deployed services and the negotiated properties, the time of returning the discovered results is prolonged slightly, but the accuracy of service discovery is advanced greatly.