BPMN is a notation for business process modeling. Process models can be complex, for instance, with unstructured (cyclic) topologies. BPEL, on the other hand, is the choice for web service orchestration. This paper presents an approach to systematically identifying and classifying subgraphs in a BPMN model that may be translated to BPEL code. Most of existing methods rely on exhaustive search. In contrast, we partition the BPMN model into single-entry single-exit regions which are then classified according to control flow information. This information is gathered by using a reachability analysis based on dataflow equations.
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