Search code examples
semantic-webowlontologyprotege

Adding multiple domains to objectProperty in Protege 5

I have created an ontology using Protege 5-beta-17. In my ontology I have some classes:

Mountain, Lake, Location etc...

I also have an object property:

hasLocation.

For this object property I have set the range the "Location" class, and the domain the "Mountain" and "Lake" classes.

When I try to view the ontology using the CMap tool it shows that only the

"Mountain" "hasLocation" "Location".

The "Lake" class is presented without the "hasLocation" object property.

Did I do something wrong? Ore do I have do something else in Protege?

Solution

  • I found out what the problem was.

    When adding a domain/range to object property in protege you have to click the following buttons and select one of your classes:

    enter image description here

    If you want to add another domain/range you simply click one of the buttons again and add another class. If you are doing it like this your telling Protege that the domain/range of your object property is an INTERSECTION of two classes. This means that the individual that will take the domains/ranges place is an INSTANCE OF BOTH CLASSES and NOT EXCLUSIVELY OF ONE OF THEM. This was my mistake. I was adding the classes to the domain in the wrong way.

    So... The correct way for adding multiple distinct domains for an object property is the following:

    Simply click the domain/range button again and select the "Class expression editor" tab: enter image description here

    And in the "Class expression editor" type in your classes like this: "ClassA or ClassB or ClassC or ...".

    In my case it was "Mountain or Lake".

    After that click "ok" and thats it.