Fornara, Nicoletta Viganò, Francesco Colombetti, Marco 2007 In this paper we propose an application-independent model for the definition of artificial institutions that can be used to define open multi-agent systems. Such a model of institutional reality makes us able also to define an objective and external semantics of a commitment-based Agent Communication Language (ACL). In particular we propose to regard an ACL as a set of conventions to act on a fragment of institutional reality, defined in the context of an artificial institution. Another contribution of the work presented in this paper is an operational definition of norms, a crucial component of artificial institutions. In fact in open systems interacting agents might not conform to the specifications. We regard norms as event- driven rules that when are fired by events happening in the system create or cancel a set of commitments. An interesting aspect of our proposal is that both the definition of the ACL and the definition of norms are based on the same notion of commitment. Therefore an agent capable of reasoning on commitments can reason on the semantics of communicative acts and on the system of norms. application/pdf https://localhost:5000/ark:/12658/srd1318307 https://susi.usi.ch/global/documents/318307 https://susi.usi.ch/documents/318307/files/fornara_AAMAS_2007.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1007/s10458-006-0017-8 info:eu-repo/semantics/altIdentifier/ark/12658/srd1318307 info:eu-repo/semantics/openAccess License undefined Autonomous agents and multi-agent systems. - Kluwer Academic Publishers Hingham. - 2007, vol. 14, no. 2, p. 121-142 Agent communication language commitments artificial institutions norms info:eu-repo/classification/udc/65 Agent communication and artificial institutions http://purl.org/coar/resource_type/c_6501