3. Service-Meta model and configuration graph

Sources	Klingner, Stephan, and Michael Becker. “Konfiguration von Dienstleistungen – Ein Ansatz zur Verbindung von Geschäftsprozessen mit Dienstleistungsmodellen.” Dienstleistungsmodellierung 2014. Springer Fachmedien Wiesbaden, 2014. 76-96. Becker M, Klingner S (2013) Formale Modellierung von Komponenten und Abhängigkeiten zur Konfiguration von Product-Service Systems. In Thomas O, Nüttgens M (Hrsg) Dienstleistungsmodellierung 2012. Springer, Wiesbaden, 114 –140 Böttcher M, Klingner S (2011) Providing a Method for Composing Modular B2B-Services. Journal of Business and Industrial Marketing 26(5):320–331 Böttcher M., Becker M., Klingner S. Dienstleistungsmodularisierung zur kundenindividuellen Konfiguration //Proceedings of Informatik. – 2011
Application	The meta-model targets a componentbased description of services. Time restricted and logical dependences between single components are formalized using statement- and predicant logics. The component based modeling of the performance bundle structure generate the basis for customer specific configurations.
Idea	Dependences between components can be illustrated by an configuration graph. A component mean while is understood as an singular step in service fulfilling. The service meta-model is used for the decomposition of the existing services in their elements.
Phases in the modularization process	A proper module generation is not supported, because the components, which were identified in the decomposition process, are use one-to-one as modules.
Module structure	Because of several logical and temporary dependences the structure of the modules are quite complex.
Input	Singular components
Output	The result is a graph that illustrates the logical and temporary dependences of single modules.
Application requirements	Modules have to be formed beforehand. Meaning that the configuration graph is practically no real method for modularization. It is further an visualization of the logical and temporary dependences between the prepared modules. So the configuration graph is the guideline for the possible service configurations using the prepared modules.
Approach	Describe the single service modules using functional and non-functional attributes as well as needed resources (A). Describe the inter modular structure, e.g. modul a consists of B, C and optional D). Design a appropriate configuration graph that includes the logical and temporary guidelines (B). Based on the in the configuration graph illustrated guidelines, the customer is able to select individual modules to configure his service (C). In the last step the service providing steps are generated by the deposited temporary guideline (D).
Conclusion	Advantages: The method describes complex and inter modular connections. This is very useful for the realization of configurations and illustrations of configuration possibilities in front of the customer. Disadvantages: The method only allows a modularization notation which enables the structuration of single service modules in a graph