Category: Data & Experiments
Controlled experiments measuring how specific content variables affect AI citation rates. Each experiment isolates a single variable — structure, entity density, freshness, or platform behaviour — and tests it under documented conditions with replicable methodology. Results include raw citation data, statistical significance assessments, and practical recommendations based on observed effect sizes.
-
Does Query Phrasing Decide Citation Rate? Pre-Registering E026
Read more →: Does Query Phrasing Decide Citation Rate? Pre-Registering E026Does Query Phrasing Decide Citation Rate? Pre-Registering E026 By Artur Ferreira · The GEO Lab · Published: 9 June 2026 · Version 1.0 Does query phrasing change citation rate? 150…
-
Zero-Variance Mechanism Capture: Retrieval-Layer vs Synthesis-Layer Determinism
Read more →: Zero-Variance Mechanism Capture: Retrieval-Layer vs Synthesis-Layer DeterminismE043 identifies where Perplexity’s 14-day zero-variance citation binding lives: synthesis-layer determinism, not retrieval-layer. Three queries, three days of Chrome DevTools capture.
-
Before You Trust Any GEO Experiment Result, Ask About the Noise Floor
Read more →: Before You Trust Any GEO Experiment Result, Ask About the Noise FloorCitation rate on Perplexity varies by ±4-6 percentage points day to day with no content changes. E016 established this noise floor. Any GEO experiment reporting a delta smaller than the…
-
Your AI Visibility Dashboard Is Lying to You. JavaScript Is Why.
Read more →: Your AI Visibility Dashboard Is Lying to You. JavaScript Is Why.AI crawlers are HTML-only. GPTBot, PerplexityBot, and ClaudeBot fetch raw HTML — no JavaScript execution. Content rendered via JS is invisible to every AI platform. A one-line curl test reveals…
-
E042: Cross-Platform Retrieval Mechanism Map — Perplexity, ChatGPT, Gemini on the Same 9 Queries
Read more →: E042: Cross-Platform Retrieval Mechanism Map — Perplexity, ChatGPT, Gemini on the Same 9 Queries27 data points, 3 platforms, 1 session. Perplexity 67%, ChatGPT 56%, Gemini 0%. Cross-platform retrieval mechanism map and the first observed ChatGPT pre-retrieval gate bypass.
-
Fan-out Query Length and Citation Rate: 225 Queries, Inverted Result
Read more →: Fan-out Query Length and Citation Rate: 225 Queries, Inverted ResultPre-registered prediction falsified. 225 Perplexity measurements: short queries cited at 61%, long queries at 16%. The 45pp gap holds across five days. Mechanism: namespace drift, not content quality.
-
Perplexity Cites the Same Pages Every Day: A 14-Day Zero-Variance Replication
Read more →: Perplexity Cites the Same Pages Every Day: A 14-Day Zero-Variance Replication14-day Perplexity measurement confirms zero inter-day citation variance. Q02/Q05/Q06 stable across all runs. T2 rate 0/70. T1 grew from 60% to 82% average days 6–14.
-
Citation Rate and Query Length — E030 Pre-Registration | The GEO Lab
Read more →: Citation Rate and Query Length — E030 Pre-Registration | The GEO LabE030 pre-registers the hypothesis that Perplexity citation rate increases with query length. A frozen 45-query set across 3 length tiers, 3 stably-cited pages, 5-day measurement window starting 2026-05-19.
-
Claude Leads Perplexity. Ahrefs Shifts to AI Memory Brand. The May 2026 GEO Brand Citation Index Is Out.
Read more →: Claude Leads Perplexity. Ahrefs Shifts to AI Memory Brand. The May 2026 GEO Brand Citation Index Is Out.May 2026 GEO Brand Citation Index: Ahrefs returns to AI Memory Brand with −39.13 delta. Claude hits +60.87 — highest in three runs. SEO vertical has three simultaneous AI Memory…
-
FAQPage Schema and AI Retrieval: 480 Queries, Null Result
Read more →: FAQPage Schema and AI Retrieval: 480 Queries, Null ResultTested FAQPage schema impact on AI retrieval across 480 queries. Result: schema alone produced no measurable citation improvement.