Handbook of Research on Multi-Agent Systems: Semantics and Dynamics of Organizational Models

Handbook of Research on Multi-Agent Systems: Semantics and Dynamics of Organizational Models

Virginia Dignum (Utrecht University, The Netherlands)
Indexed In: SCOPUS View 1 More Indices
Release Date: March, 2009|Copyright: © 2009 |Pages: 630
DOI: 10.4018/978-1-60566-256-5
ISBN13: 9781605662565|ISBN10: 1605662569|EISBN13: 9781605662572
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Description & Coverage

Organizational design plays a critical role in the development of larger and more complex multi-agent systems (MAS). As systems grow to include hundreds or thousands of agents, those in the field must move from an agent-centric view of coordination and control to an organization-centric one.

The Handbook of Research on Multi-Agent Systems: Semantics and Dynamics of Organizational Models brings together views and approaches from different communities including MAS, computational organizational simulation, social simulation, organizational theory, and cognitive science, to present the intersections of the different topics. Containing chapters by renowned international authors, this book provides a comprehensive volume on the state-of-the-art on formal semantic models and practical applications for dynamic formalisms of agent organizations.


The many academic areas covered in this publication include, but are not limited to:

  • Agent-based human team support
  • Artificial institutions in the event calculus
  • Autonomous agents adopting organizational rules
  • Dynamic specifications for norm-governed systems
  • Flexible and robust agent interactions
  • Framework for dynamic agent organizations
  • Interactions between organizational networks
  • Methodologies and frameworks for agent organizations
  • Modeling dimensions for agent organizations
  • Organization modeling and analysis
  • Organizational Dynamics
  • Organizational self-design in worth-oriented domains
  • Personal assistants for human organizations
  • Petri net based model for team monitoring
  • Programming language for normative multi-agent systems
  • Role of organization in agent systems
Reviews and Testimonials

This book provides an overview of current work in agent organizations, from several perspectives and focusing on different aspects of the organizational spectrum. It is the hope that the work presented here will provoke additional thought, research attention and concern for the concept of organization in and for multi-agent systems.

– Virginia Dignum, Utrecht University, The Netherlands

This work represents the maturation of the last 50 years of research on applying models of human organizations to inform an understanding of artificial organizations.

– Book News Inc. (June 2009)
Table of Contents
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Editor Biographies
Virginia Dignum received a PhD in Computer Science from the Utrecht University (the Netherlands). Before joining academia in 2003, she worked in consultancy and system development for more than 12 years. Her current research focuses on agent based models of organizations, in particular in the dynamic aspects of organizations, and the applicability of agent organizations to knowledge management. She participates and leads several national and EU-projects, and has more than 50 published articles. She organized several international workshops, was treasurer of AAMAS 2005 and is vice-chair of the Belgian-Dutch AI Association.
Editorial Review Board
  • Alexander Artikis, National Centre for Scientific Research “Demokritos”, Greece
  • Olivier Boissier, ENS Mines Saint-Etienne, France
  • Rafael Bordini, Durham University, UK
  • Cristiano Castelfranchi, University of Siena & National Research Council, Italy
  • Rosaria Conte, National Research Council, Italy
  • Ulisses Cortés, Technical University of Catalonia (UPC), Spain
  • Mehdi Dastani, Utrecht University, The Netherlands
  • Frank Dignum, Utrecht University, The Netherlands
  • Shaheen Fatima, Loughborough University, UK
  • Nicoletta Fornara, Università della Svizzera Italiana, Switzerland
  • Christian Lemaitre, Universidad Autónoma Metropolitana, Mexico
  • Victor Lesser, University of Massachusetts, USA
  • Fabiola López y López, Benemérita Universidad Autónoma de Puebla, Mexico
  • Michael Luck, King's College London, UK
  • Eric Matson, Wright State University, USA
  • Pablo Noriega, Artificial Intelligence Research Institute (IIIA), Spain
  • James Odell, James Odell Associates, USA
  • Eugénio Oliveira, University of Porto, Portugal
  • Andrea Omicini, Bologna University, Italy
  • Sascha Ossowski, University Rey Juan Carlos, Spain
  • Julian Padget, University of Bath, UK
  • Anna Perini, Fondazione Bruno Kessler, Italy
  • Paolo Renna, University of Basilicata, Italy
  • Antônio Carlos da Rocha Costa, Universidade Católica de Pelotas, Brazil
  • Juan A. Rodríguez-Aguilar, Artificial Intelligence Research Institute (IIIA), Spain
  • Paul Scerri, Carnegie Mellon University, USA
  • Jaime S. Sichman, University of São Paulo, Brazil
  • Maarten Sierhuis, RIACS/NASA Ames Research Center, USA
  • Katia Sycara, Carnegie Mellon University, USA
  • Liz Sonenberg, University of Melbourne, Australia
  • Wamberto Vasconcelos, University of Aberdeen, UK
  • Javier Vazquez-Salceda, Technical University of Catalonia (UPC), Spain
  • Mario Verdicchio, University of Bergamo, Italy
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    The main topic of this book is agent organization. Organizations in Multi-Agent Systems (MAS) can be understood as complex entities where a multitude of agents interact, within a structured environment aiming at some global purpose. Agent organizations are often associated with the idea of openness and heterogeneity in MAS. Open and heterogeneous environments pose new demands on MAS design and implementation including the integration of global and individual perspectives and the dynamic adaptation of systems to environmental changes. As systems grow to include hundreds or thousands of agents, there is a need to move from an agent-centric view of coordination and control to an organization-centric one to cope with the complexity of interaction in an environment. The view of coordination and control central to MAS needs to be expanded to enable a societal-centric focus. MAS design languages provide structures for developing organizational models, but can also enable the analysis of how natural organizations may be augmented or enhanced. That is, the tools needed for modeling, simulating agent organizations will provide new insights into organization theory.

    The term agent organization, of multi-agent organization, has become common-place within the Multi-Agent Systems (MAS) community but is used to mean different, often incompatible, issues. On the one side, organization is taken as the process of organizing a set of individuals, whereas the other side sees organization as an entity in itself, with its own requirements and objectives. As it is often the case in such situations, this leads to a fragile sense of understanding causing interpretation and integration problems when trying to compare, merge or analyze different models and frameworks. Practical applications of agent organizations and of agent principles for organizational modeling are being widely developed but formal theories are needed to describe interaction and organizational structure. Furthermore, it is necessary to understand the relation between organizational roles and the agents that fulfill them. Without attempting to merge different views into one general whole, this book presents a comprehensive overview of the different perspectives, such that the reader will be able to better understand and judge the differences.

    The intent of this book is simple – to provide an overview of current work in agent organizations, from several perspectives and focusing on different aspects of the organizational spectrum. It is the hope that the work presented here will provoke additional thought, research attention and concern for the concept of organization in and for multi-agent systems.

    The book is divided in 5 parts, each focusing on a different aspect of multi-agent organizations. The first part “Methodologies and Frameworks for Agent Organizations” sets the tone of the book by presenting state of the art developments on integrated models for MAS where the notion of organization is central.

    Chapter 1 “The Role of Organization in Agent Systems” provides an introduction to the volume, focusing on the use of organization concepts in MAS and discusses the differences between organizing MAS and MAS for organizations.

    The second chapter, “Modelling Dimensions for Agent Organizations” by Coutinho, Sichman and Boissier, discusses how to classify diverse aspects, or modelling dimensions, of agent organizations currently captured by different organizational models. Four basic dimensions are proposed: the structural dimension mainly composed of roles and groups; the interactive dimension characterized by dialogical interaction structures; the functional dimension formed by goal/task decomposition; and, the normative dimension defining norms, rights, rules, etc. Apart from the basic dimensions, four complementary dimensions are discussed: environment, evaluation, evolution and ontology. These are related to the aspects of situatedeness, measurement, adaptation and domain specific semantics of agent organizations.

    Chapter 3, “Towards an Integral Approach of Organizations in Multi-Agent Systems” by Ferber, Stratulat and Tranier, posit that a genuine organizational approach has to take into account both the environment and the institutional part of MAS societies. As in chapter 1, they also stress the importance of integrating different dimensions (agents, environment, interactions, organizations and institutions) into an integral vision. A meta-model, MASQ (Multi-Agent System based on Quadrants), is proposed that constitutes an abstraction of the various aspects of an organization centred MAS, extending the well known AGR (Agent/Group/Role) model.

    In the forth chapter, “OMACS a framework for adaptive, complex systems”, DeLoach introduces a suite of technologies for building complex, adaptive systems that includes a set of methodologies, techniques, and architectures that allow it to be implemented effectively on a wide variety of systems. It uses the Organization Model for Adaptive Computational Systems (OMACS) to define the knowledge needed about a system’s structure and capabilities to allow it to reorganize at runtime in the face of a changing environment and its agent’s capabilities.

    Another concrete example of an organization-oriented methodology for MAS is given in Chapter 5, “Hermes: Designing Flexible and Robust Agent Interactions” by Cheong and Winikoff. Hermes is a goal-oriented design methodology for agent interactions which is aimed at being pragmatic for practicing software engineers. Hermes focuses on interaction goals, i.e. goals of the interaction which the agents are attempting to achieve, and results in interactions that are more flexible and robust than message-centric approaches.

    Part 2 is about formalisms for agent organizations. In chapter 6, “A Formal Framework for Organization Modeling and Analysis” by Popova and Sharpanskykh a formal framework for modeling and analysis of organizations is proposed that allows representing and reasoning about all important aspects of artificial and human organizations structured in a number of views, including performance-oriented, process-oriented, power- and interaction-related aspects.

    Chapter 7, “Describing Agent Societies: A Declarative Semantics” by Tsvetovat, proposes a declarative language designed specifically for describing in an expressive way a variety of social interactions.

    Chapter 8, “Structural Aspects of Organizations” by Grossi and F. Dignum, investigates how organizations can be represented as graphs endowed with formal semantics. They distinguish different dimensions of organizations leading to different graph structures. By giving the graphs a formal semantics using Description Logic the chapter shows that it is possible to formalize the effect of the organization on the activities of the agents playing the roles of the organization.

    Chapter 9, “A Logic for Agent Organizations” by Virginia and Frank Dignum, posits that in order to develop a theory on the relation between organizational structures, organizational actions and actions of agents performing roles in the organization a theoretical framework to describe and reason about organizations is needed. The Language for Agent Organization (LAO) proposed in this chapter is sufficiently generic to enable the comparison of different existing organizational approaches to Multi-Agent Systems (MAS), while having enough descriptive power to describe realistic organizations.

    In the third part the individual agent and their interactions in organizations are central. In chapter 10, “Grounding Organizations in the Minds of the Agents” by Castelfranchi, presents Organizations as a macro-micro notion and device. Organizations presuppose autonomous proactive entities (agents) playing the organizational roles. However, agents may have their own powers, goals, relationships (of dependence, trust, etc.) which opens up important issues to be discussed. In order to model human organizations, and designing effective artificial organizations, models are needed that exhibit a high degree of flexibility, exploiting autonomy and pro-activity, intelligence and decentralized knowledge of role-players, allowing for functional violations of requests and even of rules.

    Chapter 11, “Modeling Interactions via Commitments and Expectations” by Torroni, Yolum, Singh, Alberti, Chesani, Gavanelli, Lamma and Mello, presents and discusses two declarative, social semantic approaches for modeling interaction. The first one takes a state-oriented perspective, and models interaction in terms of commitments. The second one adopts a rule-oriented perspective, and models interaction in terms of logical formulae expressing expectations about agent interaction.

    Chapter 12, “Communications for Agent-based Human Team Support” by Sukthankar, Sycara, Giampapa and Burnett, discusses the problem of agent aiding of ad hoc, decentralized human teams so as to improve team performance on time-stressed group tasks. To see how human teams rise to the challenge, communication patterns of teams performing a collaborative search task are analyzed using empirical experiments.

    The focus of chapter 13, “Autonomous Agents Adopting Organizational Rules” by Van der Vecht, F. Dignum and Meyer is agent autonomy. In particular, it discusses the adoption of organizational rules into the reasoning process of autonomous agents. It proposes a modular reasoning model that explicitly includes organizational rules and show that this stimulates bottom-up dynamics in organization models.

    Part 4 presents the institutional view on organizations in which organizations are taken as highly regulated environments governed by norms. In chapter 14, “Specifying Artificial Institutions in the Event Calculus” by Fornara and Colombetti, communication in open interaction systems is central. An approach to the standardization of communication is formally defined in the Event Calculus, which consists in modeling open interaction systems as a set of artificial institutions.

    Chapter 15, “Verifying Organizations Regulated by Institutions” by Viganò and Colombetti, proposes institutions to explicitly represent norms in open multi-agent systems, where agents may not follow them and which therefore require mechanisms to detect violations. A framework to verify organizations regulated by institutions is presented, which is characterized by a precise formalization of institutional concepts, a language to describe institutions, and a tool to model-check them.

    In chapter 16, “A Programming Language for Normative Multi-Agent Systems” by Dastani, Tinnemeier and Meyer, MAS are viewed as consisting of individual agents whose behaviors are regulated by an organizational artifact. The chapter presents a programming language that aims at facilitating the implementation of norm-based organizational artifacts for MAS.

    Part 5 introduces several approaches to organizational dynamics and adaptation. In chapter 17, “A Minimal Dynamical MAS Organization Model” by Rocha Costa and Pereira Dimuro, the Population-Organization model is presented, a formal tool for studying the organization of open multi-agent systems and its functional and structural dynamics. The model is minimal in two senses: it comprises a minimal set of extensional concepts able of adequately accounting for the notion of dynamic organization; and, it is a core organization model upon which a certain kind of dynamical rules can be defined, to account for the action of intensional organizational elements like prestige, power, morality, etc.

    Chapter 18, “A Framework for Dynamic Agent Organizations” by Fatima and Wooldridge, chapter presents an adaptive organizational policy for multi-agent systems called TRACE. TRACE allows a collection of multi-agent organizations to dynamically allocate tasks and resources between themselves in order to efficiently process and incoming stream of tasks.

    Chapter 19, “Dynamic Specifications for Norm-Governed Systems “ by Artikis, Kaponis and Pitt, a framework for executable specification of norm-governed multi-agent systems is extended to allow for ‘dynamic specifications’, that is, specifications that may be modified at run-time by the members of a system. The framework extension is motivated by Brewka’s ‘dynamic argument systems’ — argument systems in which the rules of order may become the topic of the debate.

    Chapter 20, “Interactions between formal and informal organizational networks” by Lamieri and Mangalagiu, presents a model of organization aimed to understand the effect of formal and informal structures on the organization’s performance. The model considers the interplay between the formal hierarchical structure and the social network connecting informally the agents emerging while the organization performs a task-set.

    Finally, in part 6, practical applications of MAS organizations are presented. Chapter 21, “Personal Assistants for Human Organizations” by Okamoto, Sycara and Scerri, focus on intelligent software personal assistants The chapter describes the development of a computational model of organization to evaluate the impact that different proposed assistant abilities have on the behavior and performance of the organization. By varying the organizational structures under consideration, is possible to identify which abilities are most beneficial, as well as explore how organizations may adapt to best leverage the new technology.

    Chapter 22, “Organizational Self-Design in worth-oriented domains”, by Kamboj and Decker, presents an approach to Organizational-Self Design (OSD), a method of designing organizations at run-time in which the agents are responsible for generating their own organizational structures. OSD is applied to worth-oriented domains – that is, domains in which problems are represented using TÆMS based task structures.

    The last chapter, “A formal Petri net based model for team monitoring” by Bonnet-Torrès and Tessier, focuses on a Petri net based model for team organization and monitoring. The applications considered are missions performed by several robots that cooperate in different ways according to the goals to be achieved. The model allows several failure propagation ways within the team to be highlighted and local plan repair to be considered.

    We have attempted to provide a comprehensive view of current developments in agent organizations as a paradigm for both the modeling of human organizations, and for designing effective artificial organizations. This book is intended to inspire and stimulate further research in the topic.

    It is appropriate to conclude by acknowledging all the agents that together made this book possible. First, I want to thank all authors for their excellent work. Without their contribution, representative of the high standard of the research in the field, this volume would not have been possible. Thanks are also due to the members of the editorial advisory board for their excellent reviewing work and their detailed suggestions to the authors that have directly contributed to the high quality final result presented here. Special thanks to Liz Sonenberg for her kind foreword to this book, for her contribution to the idea of this volume, born during my sabbatical at the University of Melbourne in 2006, and for the continued interchange of ideas, students and projects. Hopefully, it will continue for many years. Thanks also to Heather Probst at IGI for her never failing efficiency on answering all mine and the author’s questions and for her management of the editing process. This work was made possible by the support of the Netherlands Organization for Scientific Research (NWO), through the Veni-fellowship project “Supporting Knowledge Sharing in Organizations”. Finally, I dedicate this book to Frank, Martyn and Laura, my home organization.