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WO39 final: ara stage-2 rejected — canonical unchanged #308

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ronaldtse merged 1 commit into from
Oct 18, 2026
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WO39 final: ara stage-2 rejected — canonical unchanged #308

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19 changes: 19 additions & 0 deletions TODO.sota/39-ar-oracle-distill.md
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Expand Up @@ -77,3 +77,22 @@ timeout — resume6/8 died exactly there). Stats:
sft stage planned it (O_* envs, both mounts) and the Runner's budget
guard cleared it — the first dogfooded launch; hand-typed job commands
retire here. Gate: first-alt WER < 3.5607; stretch ≤ 2.70.

## FINAL (2026-10-19): stage-2 REJECTED — ara canonical unchanged

oepoch-1 dual-surface eval (the training itself converged, loss 0.002;
eval initially crashed on missing pandas — rerun eval-only):

- SadeedDiac-25: Total DER **8.32** (gate: hold r7's 2.29) — identity
COLLAPSE
- WikiNews-2024 multiref: RAW 9.95 WER / 9.06 DER; first-alt
**3.97 WER** (gate < 3.5607) — MISS

The stage-1 oracle was real (0.54% relabel CER) but continue-training
on the relabeled 290K subset regressed both surfaces — domain-narrowed
distillation destroyed general calibration. Same family of negative as
fas stage-2. **ara canonical: ara-diac-2.0 (shipped, DER 2.29); the
oracle-distillation lever is now data-closed for BOTH ara and fas.**

Ops scars recorded: spine deps gap (fixed, #303), eval-only rerun
pattern (eval_oepoch1.py), eval extras belong in recipe deps.
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