Files
pdf_signature_extraction/paper/v4
gbanyan 128a91433f Apply Phase 5 round-5 provenance patches from codex round-9
Closes the two factual / provenance issues codex round-9 caught in
the round-4 fixes. Text-only patches; no script reruns.

Patch A — N1 wording corrected: §IV-M.4 line 325 had said the 379
mixed-firm PDFs "resolve to Firm C as the majority firm" (propagated
from Opus round-2's incorrect inference from reading the Script 45
source). Codex DB-verified all 379 are actually 1:1 Firm C / Firm D
ties, assigned to Firm C only because `np.argmax` over `np.unique`'s
alphabetically-sorted firm counts returns the first-sorted firm on
ties. Corrected to the actual tie-break explanation.

Patch B — N2 Table XXVII row 1 narrowed: composition-decomposition
row's untested-assumption cell previously claimed "within-firm dip
tests on every firm with n >= 500 (Script 39c) corroborate absence
of within-population bimodality." Codex verified Script 39c on raw
dHash actually REJECTS unimodality in all 10 firms (integer ties);
only Big-4 per-firm jittered (Script 39d) and Big-4 pooled
centred+jittered (Script 39e) are emitted. Narrowed to those two
diagnostics — no overreach to non-Big-4 jittered evidence.

Patch C — §III line 59 + provenance table line 382: replaced the
unreproducible $[0.71, 1.00]$ non-Big-4 jittered-dHash range with
codex's read-only verified range $[0.38, 1.00]$, attributed as a
"codex-verified read-only spike on Script 39c substrate." The
qualitative claim (0/10 non-Big-4 firms reject after jitter) is
preserved and confirmed by codex's independent rerun; only the
specific manuscript range was unverifiable from the committed
script reports.

Verification:
- `rg -n "majority firm |nine-tool|9 tools"` in paper/v4/ returns
  0 matches in published prose; only 2 matches in internal
  strip-at-splice text (Phase 4 draft note + §III internal
  checklist).
- All Script 39c citations now technically accurate (cosine for
  per-firm; codex-verified for jittered-dHash spike).
- Abstract still 247 words.

Phase 5 convergence: 3/3 reviewers in Accept/Minor band remains
intact. With these factual corrections applied, the manuscript text
is now consistent with the committed script outputs. Remaining
work: splice-time strip of internal notes / checklists, then
proceed to Phase 6 partner Jimmy review.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 18:02:35 +08:00
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