BenchmarksMay 25, 20266 min read
460-Question Benchmark Overview
How Lewsearch synthetic panels are evaluated against independently fielded survey instruments from Texas, California, and national tri-metro sources.
Read →Swarmgram Notes
Validation notes
Short memos on how we evaluate Lewsearch: aggregate benchmarks, protocols, and failure modes. Not a substitute for a full academic paper. Customer-facing tables live on lewsearch.com/methodology.
MethodsMay 25, 20265 min read
Five-Fold Cross-Validation Protocol
Why every Lewsearch accuracy number is out-of-sample, and how we prevent calibration leakage across the benchmark pool.
Read →BenchmarksMay 25, 20264 min read
Pre-Registered Held-Out Evaluation
The strictest generalization test: questions sourced after training freeze, scored under pre-specified exclusion rules.
Read →PolicyMay 25, 20265 min read
What We Publish (and What We Withhold)
Building credibility without publishing the full internal roadmap. Public validation boundaries for Lewsearch.
Read →ForecastsMay 25, 20264 min read
Pre-Registered Forward Forecasts (May 2026)
Frozen predictions on Pew AI Trends and Pew Top Problems benchmarks before ground truth is published.
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