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Adding a specialization

A specialization indicates that one concept derives from—or is subordinate to—another concept. Commonly in a knowledge graph, the notions of a parent-child relationship are best represented as a specialization.

One way to add a specialization is to click the Specialization tool in the toolbox.


Next, mouse over to the child concept and click on it.


Move the mouse gently away from the child concept to see the tail of an arrow attached to the child concept.


Finally, mouse over to the parent concept and click to release. The specialization is now established between the child and parent concepts.


Add a parent or child

Add a Parent

If you have a child concept, you can add a parent concept. Using the context menu of an existing concept, click on the + button for the child concept, and then choose Add Parent.


An arrow will be added pointing away from your original concept.


Observe that the result here is the same result as when using the Specialization tool from the toolbox. The arrow points away from the starting concept.


Add a child

To connect a child concept to an existing parent concept, click the + button on the parent concept and choose Add Child.


In this case, the arrow points toward the starting concept.


Reversing the direction for a specialization

If you would like to reverse the. directionality of a specialization, click on the specialization element, and then click the + button to display the context menu. Choose Reverse Direction to change the direction of the arrow and swap the parent with the child in the connection.


Delete a specialization

To delete a specialization, click on the specialization element and then click the + button. In the context menu, choose Delete specialization.


Detailed specialization information

The only detail information available for a specialization is the concepts that it connects. Click on a specialization element to see its connected concepts in the information panel on the left.


Specialization export type

Specializations export as rdfs:subClassOf.