Semantic Annotation for Process Models: - Department of Computer ...

170 CHAPTER 10. CONCLUSIONS AND FUTURE WORK
• Semantics of relationships in original models have not been taken into account in
this approach. Most of the annotation targets in our approach are entities/classes.
Semantics conveyed by the relationships between the modeling entities/classes
have not been preserved but transformed into the relationships between the GPO
concepts, which might cause some loss of model semantics. However, the annotation
of relationships is difficult due to the complexity and flexibility of the
relationship representations in most semi-structured models.
• Relationship between the semantic annotations of process models at the conceptual
level and at the execution level could be developed. Although process models
in our application may be regarded as a service, the difference between a Web
service and a process model is that a Web Service is executable. A Web service
uses programming-like control constructs as their basic building blocks which are
inadequate for all the modeling issues. Our approach can compensate for the
inadequacy from a different modeling perspective, but more work needs to be
completed.