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pdf_signature_extraction/paper
gbanyan 980295d5bd Update §IV v3.3: soften §IV-D/E framing + rename §IV-I + add §IV-M
- §IV-D opening: note that the accountant-level dip rejection is
  fully explained by between-firm composition + integer ties per
  §III-I.4 (Scripts 39b-e), no longer "the empirical justification
  for fitting a mixture model"
- §IV-E Tables VII/VIII: K=2/K=3 component labels changed from
  "hand-leaning / mixed / replicated" to position-on-plane labels
  per §III-J recasting
- §IV-I retitled "Inter-CPA Pair-Level Coincidence Rate"; v3.x's
  "FAR" terminology retroactively reframed; references §IV-M for
  the v4 Big-4 spike (Script 40b)
- New §IV-M (7 tables XIX-XXV): v4-new anchor-based ICCR
  calibration results consolidated — composition decomposition
  (Scripts 39b-e), pair-level ICCR sweep (Script 40b), pool-
  normalised per-signature ICCR (Script 43), document-level
  ICCR by alarm definition (Script 45), firm-heterogeneity
  logistic regression + cross-firm hit matrix (Script 44),
  alert-rate sensitivity (Script 46)
- Header bumped to v3.3 (post codex rounds 21-34)

Companion to §III v7 commit 723a3f6 and Phase 4 prose v3 commit
b33e20d.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 18:18:59 +08:00
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