Hornets: Nets within Nets Combined with Net Algebra

  • Authors:
  • Michael Köhler-Bußmeier

  • Affiliations:
  • University of Hamburg, Department of Informatics, Hamburg, D-22527

  • Venue:
  • PETRI NETS '09 Proceedings of the 30th International Conference on Applications and Theory of Petri Nets
  • Year:
  • 2009

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Abstract

In this contribution we propose an algebraic extension of object nets. Object nets, also known as nets within nets , allow nets itself as tokens. The algebraic structure introduced here refers to the topology of these net-tokens, i.e. we have operators which compose nets. Object nets that use net operations in arc expression are called Higher Order Recursive Nets , or short: Hornets . The operations on nets allow to modify the structure of net-tokens at run-time. We apply this construct to the workflow management domain. We propose a simple Hornet model of a distributed workflow management system . This system consists of a network of workflow management agents. The agents cooperatively transfer workflows over the network for distributed execution, monitor their processes, and reorganise the workflow repository to improve e.g. the system's performance.