Fuzzy resource-constrained time workflow nets

Abstract

The underlying proposal of this work is to express in a more realistic way the resource allocationmechanismswhen human behavior is considered inWorkflow activities. In order to accomplish this, fuzzy sets delimited by possibility distributions are associated with the Petri net models that represent human type resource allocation mechanisms. Additionally, the duration of activities that appear on the routes (control structure) of theWorkflow process, are represented by fuzzy time intervals produced through a kind of constraint propagation mechanism. New firing rules based on a joint possibility distribution are then defined. Finally, the model is built using CPN (Colored Petri net) language supported by CPN Tools.