Semantic Web-Based Information Systems: State-of-the-Art ...

Figure 11. Use case scenario of the SmartResource I
“Service”
Labelled data
Diagnostic model
Querying data for learning
General Adaptation Framework 81
Labelled data
“Device”
Learning sample and
querying diagnostic results
“Expert”
History data
Querying
diagnostic results
after analysis. The labeled data in the RSCDF format is stored in the history of the
device and further is used for a learning procedure with the service. In order to
meaningfully read the device history, service utilizes the corresponding adapter.
Thus, the tasks of the three adapters generated using General Adaptation Framework,
are as follows:
1. Transform XML-based descriptions of the device history into the appropriate
RSCDF form (instances).
2. After that, on the request of the expert (diagnostics) or service (learning/diagnostics),
the adapter has to transform device data from the RSCDF form to
the representation that is more convenient for the expert/service. Feedback of
the expert or service has to be converted again into RSCDF for further reading
by the device logics.
Let us describe the sequence of operational steps that occur according to the use
case scenario. The corresponding sequence diagram created with the Poseidon UML
modeling tool is presented in Figure 12. In the figure, four acting objects of the
scenario are shown: Service Prototype, Device Prototype, Expert Prototype, and a
Human User actor. The prototypes comprise corresponding adapters, and a simple
logic of interaction among each other is used for testing the adapters. The Human
User actor represents a Web-browser-based user interface designed for monitoring
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