Iteration 33 โ H-019 IPP Passes the Entrance Exam EXAM PASS ยท DISCORDANCE PROBE NEXT
In plain words: the next candidate asks a subtler question than any instrument so far: not "does the average relationship hold across regimes?" but "does the entire shape of the prediction hold โ including the tails, where financial risk actually lives?" A relationship can keep its average while its spread doubles; every SSR-based instrument in the stack is blind to that. The exam form: score each prediction with CRPS โ a strictly proper scoring rule that rewards getting the whole distribution right โ and test whether scores stay level across the ten regimes. It passed cleanly: perfect answers accepted (the scoring rule handles the exact-zero-error case gracefully, where a log-score would blow up), wrong answers rejected with the strongest separation any exam form has shown, exactly the right variable identified. The real fight is next: since this candidate and the reigning identifier both start from the same regressions, the redundancy gate must find the features where the shape shifts while the average holds โ that population is this candidate's entire reason to exist.
Preflight (A0): 2026-07-11 โ load1 4.11/32c (โค24) ยท 16 GiB avail ยท CH + sidecar active ยท no heavy jobs โ ALL PASS. One capped run (0.49 min), complete-case real rows, permutations of real values only. Exam form pre-registered in-script.
Exam design (pre-registered)
Element
Choice
Candidate mechanism
IPP (Henzi et al. 2024 Biometrika): invariance of the WHOLE predictive distribution via proper scoring rules. Bounded form: Gaussian predictive (pooled OLS mean + residual sd) ยท closed-form Gaussian CRPS per observation ยท statistic = per-env heterogeneity of mean scores
Null skeleton
v5 fold-product unchanged (J=5 env-stratified folds, K=99 row permutations of fixed per-row scores, degenerate guard, e<20 accepts) โ only the statistic differs from the admitted oracle
1.0 (5/5 degenerate folds โ exact zero error; CRPS โ |yโฮผ| = 0, no log-score infinities)
ACCEPTED โ
intra_intensity_qps
17,287
REJECTED โ
intra_burstiness
31,816
REJECTED โ
intensity+burstiness
26,632
REJECTED โ
Identified
{duration_us} โ exactly right. EXAM PASS (row 42), 0.49 min
The decisive question, recorded now: IPP and e-ICP-fp both ride pooled OLS residuals. The M3 walk must include a discordance probe โ the features where IPP rejects invariance while e-ICP accepts it (variance/tail shifts at a stable mean, invisible to SSR). That population is the candidate's entire role case; if it is empty, the CRPS layer is decoration and the candidate dies redundant.
โถ Next iteration
Next firing: IPP M3 + discordance probe โ per-feature CRPS-invariance readouts over the 130-subject EURUSD@5 grid vs the four-instrument forex stack (e-ICP, seqICP, IAS ancestry, k_v, redundancy), plus the count and identity of mean-stable/shape-shifting features. |ฯ| โฅ 0.95 or an empty discordance set โ EXCLUDE, queue advances to H-025 HSIC-X. Standing for the operator: the 73 cycle-1 draft statuses (iters 11/13), the Frontier #4 expiry-monitor precondition review, and the ripening STABLE-declaration proposal (three certified forex instruments + the โ -invariance lens).