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MASSYVE TECHNICAL REPORTS

Balanced Industrial Automation Approaches for Agents Integration

Ricardo J. Rabelo; L.M. Camarinha-Matos

Technical Report GSIGMA 001/98

December 1998

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MASSYVE PAPERS

Applying Federated Databases to Inter-Organizational Mult-Agent Scheduling

Ricardo J. Rabelo; Hamideh Afsarmanesh; Luis M. Camarinha-Matos

Presented in MAS'99 1st International IFAC Workshop on Multi-Agent Systems in Production, Vienna, Austria, 2-4 Dec 1999.

Abstract

Distributed scheduling of production tasks among autonomous cooperative enterprises is a challenging issue that requires innovative approaches. An approach to how an inter-organizational multi-agent agile scheduling system can be supported is introduced in this paper, and enhanced with the capabilities supported by an advanced federated database management architecture.

Keywords: Agents, Database Management System, Virtual Enterprise, Scheduling.

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Multiagent Perspectives to Agile Scheduling

Ricardo J. Rabelo (UFSC) , Luis M. Camarinha-Matos (UNL) , Hamideh Afsarmanesh (UvA)

Presented in Basys'98 – IEEE / IFIP International Conference on Balanced Automation Systems, Prague, Czech Republic, 26-28/08/98.

Abstract

This paper focuses on the discussion of innovative and balanced perspectives of multiagent approaches to advanced agile scheduling systems. Several achieved results and current developments are described, taking as the basis the HOLOS system, that is a framework to derive instances of multiagent agile scheduling systems. This framework is briefly described, emphasising the use of negotiation approach to improve the scheduling flexibility, as well as the aspects of information integration, communication, and coordination in a community of agents. For information integration and management, three approaches are addressed and the utilisation of the PEER distributed/federated database management system is suggested. Finally, some innovative aspects for agile scheduling are introduced, in specific from the virtual enterprise requirements point of view.

Keywords: Agile Scheduling, Multiagent Systems, Information Integration, Virtual Enterprise.

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Generic framework for conflict resolution in negotiation-based agile scheduling systems

R. J. Rabelo; L. M. Camarinha-Matos 

Presented in IMS'98  - 5th IFAC Workshop on Intelligent Manufacturing Systems, Gramado - Brazil, November 1998.

Abstract

This paper describes a general framework for conflict resolution being implemented on the HOLOS multi-agent scheduling system. The framework is integrated with the planning and execution supervision activities, emphasizing the importance of local supervision actions. Conflicts are classified in levels and types, and the specific actions for their resolution, carried out during scheduling generation, after its generation and during its execution, are also presented. A significant part of the conflict resolution process is supported by using the user guide negotiation approach. Finally, the decentralized scheduling supervision process is shown.

Keywords: Scheduling algorithms, Agile manufacturing, Distributed artificial intelligence.

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Multiagent-based Agile Scheduling

R. J. Rabelo, L. M. Camarinha-Matos, H. Afsarmanesh

International Journal of Robotics and Autonomous Systems, Special Issue on Multi-Agent Systems Applications, (27)pp.15-28,  North-Holland, 1999.

Abstract

The multi-agent systems paradigm represents one of the most promising approaches to the development of agile scheduling systems in manufacturing. Innovative and balanced perspectives of multi-agent approaches to agile scheduling are discussed in this paper, and several achieved results and current developments are described. The description of the multi-agent framework emphasizes the use of negotiation mechanism to improve the scheduling flexibility, as well as the aspects of information integration, communication and coordination in a community of agents. For information integration and management various approaches are addressed and the utilization of a distributed/federated database management system is suggested. Finally, some innovative aspects for agile scheduling are introduced, particularly in the context of virtual enterprise environments.

Keywords:: Agile scheduling, multi-agent systems, integrated information management, virtual enterprise.

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OTHER RELATED PAPERS ON AGILE SCHEDULING AND VIRTUAL ENTERPRISE

http://www.brint.com/papers/

http://www.uninova.pt/~prodnet/papers.html

http://www.gsigma-grucon.ufsc.br/english/publicat.htm