OWL DL Ontology
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OWL DL Ontology |
The OWL DL ontology you will create describes Altova documents. It shows you how to use SemanticWorks features that are not available when editing OWL Lite ontologies. It consists of the following sections:
| • | Setting up an OWL DL Ontology: Shows how to create a new ontology document, select the ontology level, declare namespaces, and save the ontology document. |
| • | Creating Classes and Hierarchies of Classes: Shows how to create the ontology classes and create a hierarchy of classes using the subclass connector. |
| • | Instances as Class Enumerations: Explains how instances can be created as class enumerations, and why class enumerations are needed. |
| • | Defining Properties: Shows how to create OWL object and datatype properties, and how to define their domain and range. |
| • | Describing Classes and Their Instances: The focus is on describing complex OWL DL relationships between classes. You will learn how to describe a class as a union of two classes and to further restrict that union. You conclude by creating instances of the newly created restricted class and checking the syntax and semantics of the ontology. |
| • | Defining Complementary Classes and Their Instances: Explains how to state that one class is a complement of another class. Class instaces are then created and defined, and the ontology is checked for correct syntax and semantics. |
The OWL DL ontology that is the end result of this tutorial part is delivered in the SemanticWorks package as the file AltovaDocuments.rdf, and it is located in the application folder: C:/Documents and Settings/<username>/My Documents/Altova/SemanticWorks2008/SemanticWorksExamples/Tutorial. Note that the AltovaDocuments.rdf ontology is required for the RDF tutorial part, which uses its resources.
Note: In this part of the tutorial we assume that you have already completed the earlier OWL Lite part of the tutorial. Therefore, certain steps that were explained in detail in the earlier part are not described in detail in this part. If you find that you are having difficulty with any step, refer back to the corresponding section in the first (OWL Lite) part of the tutorial.
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