I am having trouble understanding the instructions to Context Provider authors regarding extending the higgins ontology as per the Context Data Model 1.1 page. (I apologize in advance, if this is a basic OWL question or is documented elsewhere on the wiki)
http://wiki.eclipse.org/Context_Data_Model_1.1#Building_on_higgins.owl_1.1 In the section "Building on higgins.owl 1.1 " it states " Developers must create specialized ontologies based on HOWL that describe specific concrete domains.For example, if a developer wanted to describe a CRM database, she would create an OWL ontology that would describe the data objects in the CRM database. This CRM database is called a Context in Higgins. If, for example, the database contained records about customers and those customers had full-names and email addresses, then the developer would define "Customer" as a sub-class of Entity and "full-name" and "email" as kinds of Attributes." The first sentence implies the developer should be using the "upper" ontology higgins1.1 owl. But the last sentence tells the developer to reference the CDM and subclass Entity. Intuitively, I think i would want to subclass Person from HOWL for a Customer object. But Agent does not seem to subclass Entity. When I use OWL modeling tools like SWOOP or Protoge, I can not figure out how to subclass Agent as an Entity. Thanks for any guidance, David David Kuehr-McLaren Tivoli Security Identity Integration Architecture 919.224.1960
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