“…By the extensive analysis of most of the existing ontology metrics, we summarize the measurement entities of the existing ontology metrics 12,13,14,15,16,17,24,25 , most of which mainly include concepts/classes, properties, class inheritance, axioms, instances, fanouts, fanins, paths and partitions. In these types of measurement entities, classes, properties, class inheritance, axioms and instances belong to the fine-grained types of measurement entities because they are the basic elements consisting of ontologies.…”