Answer first
A method for finding what is missing in a knowledge base by visualising it as a graph and identifying structural holes, dense clusters of related ideas that are not connected to each other. Bridging a structural hole tends to produce original, non-generic insight, because the territory between two developed clusters is by definition under-explored.
What technique generates the internal link suggestions?
Ingest a body of knowledge, cluster it, identify where two dense clusters sit close but unconnected, then deliberately bridge the gap. For a content programme this is a way to manufacture non-commodity ideas systematically rather than waiting for inspiration, the gaps are where the original thinking lives.
What do the numbers say about schema markup and entity authority?
| Metric | Figure | Source |
|---|---|---|
| Facts in the Google Knowledge Graph | 1.6 trillion | Wikipedia |
| Entities in the Google Knowledge Graph | 54 billion | Wikipedia |
| Rich result types Google supports via structured data | 35+ | Google for Developers |
Figures as reported by the cited sources on the dates they published them.