PRI-based communication and collaboration between agents

In this study, an extension to the original 3APL is made for the purpose of practical development of communication and collaboration between agents. Two pairs of primitives are incorporated into 3APL to implement information exchange and function collaboration between agents. Three basic actions dealing with priority are introduced to the agents to handle the tasks that require the priorities of collaborating candidates. The formal syntax and semantics of these primitives and basic actions as well as an example are presented.