How to Use Class Axioms to Model Ontology Effectively in OWL

Through a deep understanding of the class axioms in OWL, this document works out some guidance of three class axioms respectively. The guidance will help us to construct ontology more clearly, effectively, richly, rigorous and can make the reasoning process proceed smoothly. Actually these guidance are abstracted from many ODPs (ontology design pattern). An example of an organization ontology, which is under the help of the guidance, is given in this document. This example displays some brief steps to construct an organization ontology and how to make the ontology contain the rich and rigorous semantic meaning. Finally, use a reasoner to classify the ontology to show the desirable result.