Depth builds the association
A dozen mentions across unrelated topics says little about what you know. A dozen mentions all circling the same expertise reads as authority on that subject. Systems that rank and summarize look for a clear, repeated association between you and a subject, although in the study below, sites cited widely on other topics also tended to be cited more within a topic.
Within-topic rank correlation between a site's citation coverage and its citations on held-out questions, 9,471 questions in 151 topics, January to May 2026
Source: Wellows, Does Topical Authority Show Up in AI Citations? What 9,471 Questions Reveal, September 28, 2026, read October 10, 2026.
Spearman correlations (0 = no relationship, 1 = identical ranking), not probabilities. A vendor study of association, not cause. How often a site was cited on other topics correlated more strongly still, 0.29 to 0.37 on every engine.
Pick the lane you want to own, then reinforce it everywhere.
How it accumulates
- Consistent positioning in every bio and placement.
- Coverage clustered around one theme rather than scattered.
- Authored content that deepens the association.
- Podcast and interview appearances on that same subject.
Why it is durable
Topical authority is hard to fake and hard to lose. Once search engines and AI models consistently connect you to a field, you become a default reference for it, which is the most valuable position in any category.
See how we build this into a campaign
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