Abstract
WorkFlow Management Systems provide automatic support to learn process models or to check compliance of process enactment to correct models. The expressive power of the adopted formalism for representing process models is fundamental to determine the effectiveness or even feasibility of a correct model. In particular, a desirable feature is the possibility of expressing complex conditions on some elements of the model. The formalism used in the WoMan framework for workflow management, based on First-Order Logic, is more expressive than standard formalisms adopted in the literature. It allows tight integration between the activity flow and the conditions, and it allows one to express conditions that take into account contextual information and various kinds of relationships among the involved entities. This paper discusses such a formalism, especially concerning conditions, and provides an explicative example of how this can be applied in practice.
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Notes
- 1.
Specifically, task start and end events are needed to properly handle time span and parallelism of tasks [24].
- 2.
Note that this interpretation differs from the one given in Petri Nets, where ‘transitions’ represent tasks.
- 3.
In an obvious representation, R may be a simple set of roles, but other kinds of representation formalism can be used as well (e.g., intensional description, reference to hierarchies, etc.).
- 4.
Actually, in its internal representation, WoMan uses a simplified notation with exactly the same meaning.
- 5.
Again, the simplified notation is actually used.
- 6.
In this case, the simplified notation is actually used.
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Ferilli, S. (2016). Handling Complex Process Models Conditions Using First-Order Horn Clauses. In: Alferes, J., Bertossi, L., Governatori, G., Fodor, P., Roman, D. (eds) Rule Technologies. Research, Tools, and Applications. RuleML 2016. Lecture Notes in Computer Science(), vol 9718. Springer, Cham. https://doi.org/10.1007/978-3-319-42019-6_3
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