Open guides
Understand the retrieval layer.
Concise explanations for using AI-query evidence without overstating what the data can prove.
Query fan-out
→02What are fan-out queries?
A practical explanation of the hidden sub-queries answer engines use to retrieve evidence before responding.
AEO / GEO
→03Why AEO and GEO need query data
Traditional keyword tools describe human search demand, not the retrieval steps AI answer engines perform for users.
Evidence method
→04Observed vs. estimated AI search queries
How Open Queries labels direct UI evidence and probabilistic reconstructions without mixing the two.
Technical methodology
→Estimating fan-out queries with log probabilities
A mathematical account of provider-native inverse perplexity, token alignment, repeated native sampling and the limits of closed-model reconstruction.