Definitionv1
Hub node: a concept or idea in a knowledge graph that has a
Hub node: a concept or idea in a knowledge graph that has a disproportionately high number of connections (inbound and/or outbound links) relative to other nodes, serving as a core structural element that holds together clusters of related ideas and represents high-value, well-integrated concepts.
Why This Is a Definition
This definition establishes hub node's precise semantic boundaries by identifying its genus (concept in knowledge graph) and differentia (disproportionately high connection count). It distinguishes hub nodes from peripheral nodes by emphasizing their structural role in holding clusters together and their representation of high-value integrated concepts, rather than just being numerous.