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

General Adaptat on Framework
Figure 2. Conceptual meaning of the resource state/condition description framework
OntoAdapter
“Device”
OntoAdapter
OntoAdapter
“Service”
“Expert”
freeware open source Protégé 3 tool are presented in Kaykova, Khriyenko, Naumenko,
Terziyan, and Zharko (2005). Querying specifics of RSCDF was analyzed
in (Nikitin, Terziyan, Tsaruk, & Zharko, 2005). Figure 2 depicts the conceptual
meaning of RSCDF: it is an RDF-compliant semantic representation format for a
resource’s historical (life-cycle) data.
RSCDF inherits from RDF an approach of modeling a problem domain utilizing
interrelated hierarchies of classes and properties. Special emphasis in RSCDF is
made on context-sensitive semantic descriptions of Web resources. This approach
endows the resulting data models with high extensibility and originally aims at
providing a semantically rich descriptive data (metadata) about a corresponding
resource to a new-generation (intelligent) software processing tools.
To utilize the RSCDF advantages in domains other than industrial maintenance, a
simplified version of RCSDF called context description framework (CDF) (Khriyenko
& Terziyan, 2005) has been designed, which includes only the following basic
new components comparable to RDF: (1) contextual representation of RDF triplet
statement (subject-predicate-object-context), where the context is represented with
a container of RDF statements; (2) the definition of a property in RSCDF schema
in addition to definition of a domain and a range will also include the definition of
a context of the property as the set of possible properties from the context container
for this property (see Figure 3).
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