Declarative Event-Based Workflow as Distributed Dynamic Condition Response Graphs

Details Declarative Event-Based Workflow as Distributed Dynamic Condition Response Graphs Declarative Event-Based Workflow as Distributed Dynamic Condition Response Graphs

2011-10-19

arxiv.org/abs/1110.4161v1

EPTCS 69, 2011, pp. 59-73

Computer Science

Logic in Computer Science

In Proceedings PLACES 2010, arXiv:1110.3853

Scientific paper

10.4204/EPTCS.69.5

We present Dynamic Condition Response Graphs (DCR Graphs) as a declarative, event-based process model inspired by the workflow language employed by our industrial partner and conservatively generalizing prime event structures. A dynamic condition response graph is a directed graph with nodes representing the events that can happen and arrows representing four relations between events: condition, response, include, and exclude. Distributed DCR Graphs is then obtained by assigning roles to events and principals. We give a graphical notation inspired by related work by van der Aalst et al. We exemplify the use of distributed DCR Graphs on a simple workflow taken from a field study at a Danish hospital, pointing out their flexibility compared to imperative workflow models. Finally we provide a mapping from DCR Graphs to Buchi-automata.

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