Net Theory and Workflow Models
- Giorgio De Michelis
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Petri Nets have been popular among the developers of workflow management systems for more than twenty years : even if we do not consider the early work of Petri himself and Anatol Holt on modelling procedures with Petri Nets, Paul Zisman and Clarence Ellis adopted Petri Nets for modelling workflows in the late seventies. From those early years, there has been a growing amount of proposals adopting different classes of Petri Nets as the modelling framework of a workflow management system. The main reasons of the popularity of Petri Nets are the following:
they allow to give to workflow models a univocal non ambiguous semantics;
they have an easy to read graphical representation;
they may support a hierarchy of abstraction levels;
they are executable models, well suited for both simulation and software specifcation.
they are too rigid since, by imposing an explicit flow of actions, they hinder users in overcoming breakdowns;
they are too complicated, since their design requires a professional expert and cannot be performed by users themselves.
they should be easily modifiable, supporting both the automatic verification of change correctness and safe change enactment on the ongoing instances ;
they should support exception handling, allowing users to follow exceptional paths on the basis of the policy of their organization, without making models too complicated;
they should offer multiple diverse views of the workflow to their diverse users (perfomers, managers, customers, designers).
- K. R. Abbott, S. K. Sarin: Experiences with Workflow Management: Issues for the Next Generation. In R. Furuta and C. Neuwirth (eds.): CSCW’94. Proceedings of the Conference on Computer Supported Cooperative Work, Chapel Hill, NC, October 22-26, 1994. New York, NY: ACM Press, pp. 113–120, 1994.
- A. Agostini, G. De Michelis: Simple Workflow Models. In Workflow Management: Netbased Concepts, Models, Techniques and Tools, Computing Science Report 98/07, Eindhoven, The Netherlands: Eindhoven University of Technology, pp. 146–164, 1998.
- A. Agostini, G. De Michelis: A light workflow management system using simple process models. Computer Supported Cooperative Work (CSCW) The Journal of Collaborative Computing, 1999, (to appear).
- E. Badouel, Ph. Darondeau: Theory of Regions. In W. Reisig, G. Rozenberg (eds.): Lectures on Petri Nets I: Basic Models. LNCS 1491, Berlin, Germany: Springer Verlag, pp. 529–586, 1998.
- G. De Michelis, C. A. Ellis: Computer Supported Cooperative Work and Petri Nets. In W. Reisig, G. Rozenberg (eds.): Lectures on Petri Nets II: Applications, LNCS 1492, Berlin, Germany: Springer Verlag, pp. 125–153, 1998.
- C.A. Ellis, K. Keddara, G. Rozenberg: Dynamic Change within Workflow Systems. In N. Comstock, C. Ellis (eds.): COOCS’95. Proceedings of the Conference on Organizational Computing Systems, Milpitas, CA, August 13-16, 1995. New York, NY: ACM Press, pp. 10–21, 1995.
- G. Rozenberg, J. Engelfriet: Elementary Net Systems. In W. Reisig, G. Rozenberg (eds.): Lectures on Petri Nets I: Basic Models. LNCS 1491, Berlin, Germany: Springer Verlag, pp. 12–121, 1998.
- Net Theory and Workflow Models
- Book Title
- Application and Theory of Petri Nets 1999
- Book Subtitle
- 20th International Conference, ICATPN’99 Williamsburg, Virginia, USA, June 21–25, 1999 Proceedings
- pp 282-283
- Print ISBN
- Online ISBN
- Series Title
- Lecture Notes in Computer Science
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- Springer Berlin Heidelberg
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- Springer-Verlag Berlin Heidelberg
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