grounding: H13 external validation - negative result, scope narrowed

↗ view on GitHub · Eli Ziff · 2026-07-30 · cc5c13b7

RegLab expert-labeled slice (174 grounded vs 32 misgrounded/ungrounded
real tool responses): word-trigram alienness INVERTED (AUC 0.372),
prompt-share chance (0.550). Diagnosis recorded before any threshold
ships: reference mismatch (grounded US responses quote US statutes -
maximally alien to the Canadian reference; jurisdiction-matched
references required), unit mismatch (claim-calibrated signal scored on
full responses; segment first), and a scope boundary - RegLab
misgrounding is largely RELATIONAL (real citation, plausible register,
wrong support), invisible to lexical lint and precisely the H12
stands-for machinery target. H13 stands as claim-level,
same-jurisdiction composed-overreach screening only.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012AgUm5EcRKbT3duVFMbrQD
Repository eliziff/Beaver
Author Eli Ziff <eliasziff@gmail.com>
Authored
Parents 1d322317
Stats 1 file changed , +18
Part of Legal grounding and retrieval research

Capture this commit into my fork

Download a Markdown prompt that tells Claude how to port this exact commit into your working tree. Run it via claude -p < capture-commit-cc5c13b7.md from inside the repo you want the change in.

⬇ Download capture-commit-cc5c13b7.md