This book constitutes the refereed proceedings of the Second International Workshop on Engineering Multi-Agent Systems, EMAS 2014, held in Paris, France, in May 2014. The 22 full papers were carefully reviewed and selected from 41 submissions. The focus of the papers is on following topics: intelligent agents, multi-agent systems, software design engineering, model-driven software engineering, reasoning about belief and knowledge, cooperation and coordination, constraint and logic programming, software verification, design patterns.

In the multi-agent systems area, linking theory to practical applications is still a fertile research topic. The aim of the workshop on Declarative Agent Languages and Technologies (DALT 2009), in its seventh edition this year, is to achieve this goal, which needs developing and using advanced declarative technologies and languages, particularly agent programming, communication languages, and reasoning and decision-making mechanisms. Developing these technologies is a particularly challenging issue from many perspectives: formal foundations, pr- ticalfeasibility, degreeof?exibility, etc. Inthiscontext, thedeclarativeparadigm is arguably the most appropriate as unlike imperative approaches, the focus is onwhatthe solutionshouldaccomplishratherthanondescribing howto acc- plish it. This is because agentcomputing, as a paradigm, is about describing the logic of computation instead of describing how to accomplish it. DALT is about investigating, studying, andusing the declarativeparadigmaswell ascombining declarative and formal approaches with engineering and technology aspects of agents and multi-agent systems. This volume presents the latest developments in the area of declarative l- guagesandtechnologies, whichaimtoproviderigorousframeworksfordesigning, specifying, implementing and verifying autonomous interacting agents. These frameworksarebasedoncomputationallogicsand other formalmethods suchas mathematical models and game theoretical approaches. Using such models and approaches facilitates the development of agents that reason and act rationally while at the same time being able to verify the behavior of these agents against their speci?cation. The main theme of DALT 2009 was the further advan- ment of relevant speci?cation and veri?cation techniques, such as, for instance, modal and epistemic logics, model checking, constraint logic programming, and distributed constraint satisfa

This book constitutes the thoroughly refereed post-workshop proceedings of the 5th International Workshop on Declarative Agent Languages and Technologies, DALT 2007, held in Honolulu, HI, USA, in May 2007 as an associated event of AAMAS 2007, the main international conference on autonomous agents and multi-agent systems.

The 11 revised full papers presented together with 1 keynote lecture and 2 invited papers from the AAMAS main conference - substantially enhanced after the workshop - were carefully selected for inclusion in the book. The papers combine declarative and formal approaches with engineering and technology aspects of agents and multiagent systems and focus especially on modeling, goals, foundational concepts, and communication.

This book constitutes the thoroughly reviewed joint post-conference proceedings of two international workshops on Coordination, Organization, Institutions and Norms in Agent Systems, COIN@AAMAS 2011, held in Taipei, Taiwan in May 2011 and COIN@WI-IAT 2011, held in Lyon, France in August 2011. The 12 revised full papers presented were carefully selected for presentations. The papers are organized in topical sections on agent coordination, norm-aware agent reasoning, as well as norm creation and enforcement.

The workshopon Declarative Agent Languagesand Technologies(DALT), in its sixth edition this year, is a well-established forum for researchers interested in sharing their experiences in combining declarative and formal approaches with aspects of engineering and technology of agents and multiagent systems. DALT2008washeldasasatelliteworkshopofAAMAS2008, the7thInter- tional Joint Conference on Autonomous Agents and Multiagent Systems, in - toril, Portugal. Following the success of DALT 2003 in Melbourne (LNAI 2990), DALT 2004 in New York (LNAI 3476), DALT 2005 in Utrecht (LNAI 3904), DALT 2006 in Hakodate (LNAI 4327), and DALT 2007 in Honolulu (LNAI 4897), the workshop again provided a discussion forum to both (a) support the transfer of declarative paradigms and techniques to the broader community of agent researchers and practitioners, and (b) to bring the issue of designing complex agent systems to the attention of researchers working on declarative languages and technologies. TheaimoftheDALTworkshopistostimulateresearchonformalanddecl- ative approaches both for developing the foundations of multiagent systems as well as for all phases of engineering multiagent systems, i.e., for speci?cation and modeling, for implementation, and for veri?cation. By providing a forum for the presentation of ideas addressing both of these aspects, DALT encourages the integrationof formal and declarativetechniques and methods that arebased on solid theoretical foundations in the engineering of multiagent systems

This book constitutes the thoroughly refereed proceedings of the 9th International Workshops on Coordination, Organizations, Institutions and Norms in Agent Systems, COIN 2013. The workshops were co-located with AAMAS 2013, held in St. Paul, MN, USA in May 2013, and with PRIMA 2013, held in Dunedin, New Zealand, in December 2013. The 18 full papers were carefully reviewed and selected from 28 submissions and are presented together with two invited papers. The papers are organized in topical sections such as coordination, organizations, institutions, norms, norm conflict, and norm-aware agents.