1 An Object-Process-Based Modeling Language for Multi-Agent Systems

While a number of modeling languages for constructing Multi-Agent Systems (MAS) have been suggested, none of them is widely accepted and used. A prominent reason for this is the gap that exists between agent-oriented modeling languages and the agent-based system modeling needs, including accessibility, flexibility, and expressiveness. This paper addresses the need for such a language by proposing OPM/MAS, an agent modeling language that extends Object-Process Methodology (OPM) with an intermediate metamodel of the MAS domain. Three case studies and a comparison to contemporary agent modeling languages demonstrate the novelty and benefits of OPM/MAS