Semantic Web technologies enable the integration of heterogeneous data using expli- cit semantics, the expression of rich and well-defined models for data aggregation, and the application of logic to gain new knowledge from the raw data [12]. Semantic tech- nologies can be used to encode metadata such as provenance, . the original source where the data came from and how it was generated [13][14]. There are four main Semantic Web standards for knowledge representation: Resource Description Frame- work(RDF),RDFSchema(RDFS),WebOntologyLanguage(OWL),andSPARQL query language. Ontologies, which formalize the meaning of terms used in discourse, are expected to play a major role in the automated integration of patient data with relevant informa- tion to support.
