Pl. XIX19 · empiricist · Measurement
Cyrus Shepard
Founder, Zyppy SEO · Oregon, USA
The empiricistBuilt the evidence-weighted AI citation ranking-factors framework everyone else cites.
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Curator's note
Cyrus publishes deliberately, not constantly — which means when something appears in the Zyppy Signal newsletter, it's worth reading. His 23-factor AI citation analysis (54 studies, scored by evidence weight) is the most rigorous public reference on what actually drives AI citations.
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Recommended firstAI Citation Ranking Factors Analysis
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23 AI citation factors scored by evidence weight across 54 studies, patents and case studies — the most rigorous public reference in the space.
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Updated May 2026