RARE (Additional Value)

RARE (Additional Value) is the third attribute type in the EAV model representing optional, low-competition content angles that create competitive advantage.

For example, 'cortisol and fertility' covered by 1 out of 10 pages. RARE attributes are opportunities for Information Gain and AI Search citations — when AI does RAG on a topic covered by only 1-2 pages, your page becomes one of the few sources. RARE attributes go into H3 headings and FAQ sections.

In knowledge graphs, RARE attributes create peripheral nodes with low Degree Centrality but high conversion potential.