Source ontologies may be imported in their entirety or included selectively through the MIREOT approach – minimum information to reference an external ontology term – used when importing an entire ontology would include unnecessary classes, properties, or axioms.
The Integrated Semantic Framework is maintained in a file repository on GitHub [full ISF] [VIVO-ISF]) that reflects the source ontologies while creating distribution modules grouping classes and properties more by function, such as grants, agents, education, etc.
The ISF ontology leverages the following ontologies in a unified, semantic structure: