#000036 §10 enumerated three open questions for tightening C_B1 /
C_B2 / C_B3 below their conservative-by-construction
data-processing-inequality ceilings of 1.0. #000036 §7 Phase 2
explicitly parks them as a single deferred work item but didn't
have its own ticket. This commit captures Phase 2 as #000043 so
the work doesn't get lost across three unrelated tickets and
the gating dependencies are visible in the ticket index.
§2 of the new ticket walks the three tightening paths:
- §2.1 C_B1 (gradient-bias) — feeds from #000034 Phase 1b
(real v7 checkpoint + Hessian-alignment probe). Verdict
→ C_B1 estimate via alignment-score distribution.
- §2.2 C_B2 (LR-trajectory diversity) — per-deployment
1-Wasserstein clustering across LR-grid mini-replicas.
Cluster count → effective channel symbols.
- §2.3 C_B3 (SGD shuffle regime) — cheapest path; deployment
configuration audit (DataLoader settings). Random-shuffle
→ C_B3 ≈ 1/√N_b; cyclic → ~1; adversarial → 1.
§3 ships the override surface already landed in
t3_bound_calculator.py (--c-b1 / --c-b2 / --c-b3 flags) — Phase
2 doesn't change the calculator's interface, only the numeric
values plugged in. New §3.2 sketches a per-deployment YAML
config-file shape; §3.3 routes measurements back into
soft-hash-channel-t3-bound.md §7.4 + §10 closure.
§7 status: parks until v7 plastic-training has at least one
active deployment AND either #000034 Phase 1b lands (unlocking
§2.1) OR a cheap-path operator audit lands (unlocking §2.3).
Partial closure (any one of §2.1/§2.2/§2.3 individually) is
acceptable.
TICKETS.md index row added; Next ID bumped 000043 → 000044.
Status note (separate finding from this commit's scope): fox
landed a comprehensive test_t3_bound_calculator.py
(51 new tests; full suite now 1720 passing vs my 1669 from
1dfb8b9). Tests validate the T3 calculator's mathematical
identities (B1/B2/B3 isolation, monotonicity), input-validation
surface, and operator-guidance text mode transitions. fox's
tests still untracked at this commit — this commit only stages
the ticket draft.
Doc-only commit; no code touched.
russell@unturf.com
2d0becf62d