R683 — ShortCtx × MidRank × HiBeta UltraExtra ep3 × LoLR (offline DPO)
Affine SN120 challenger for Reason v4 (weight_version_key=7): tempered
multi-sample log-mean-exp over k=3 teacher refs (τ=0.03).
Per turn: a_i = lpC(y_i|z_A) − lpC(y_i|∅);
Reason = τ·log(mean_i exp(a_i/τ)). Crown also needs median stripped |z|≥80
and B pass ≥0.30.
How this checkpoint was trained
- Base / parent:
unconst/Affine-5czsc2fc98-r252-merged@b42d6245d77fe30885ea8a90387771e1bc465e0f(our crowned r252, reign 33) - Method: offline DPO on Reason-ranked duel pairs (not SFT / not online GRPO)
- What was optimized: preference for thoughts that raise teacher-side Reason (commit to a teacher next-action mode; filler loses under LME)
- Data: ShortCtx × MidRank × HiBeta filtered duel preference pairs from
dpo_duel_reason.jsonlundermining/experiments/r683-r252-offline-dpo-hialpha-midrank-hibeta-shortctx-ultraextrasteps-ep3-lolr(kept ≥200 examples at launch) - Key hyperparameters:
- LoRA r=32 (MidRank), α=128 (HiAlpha)
- β=0.3 (HiBeta)
- lr=1e-6 (LoLR)
- max_len=6144 (ShortCtx)
- max_steps=7200 (UltraExtra; 2× Mega 3600)
- epochs=3
- Hardware: Lium
mine-r226-marsplan-fullft-1(brave-raven-a9) 8×B200 GPUs 6,7 train+merge; SCP →mine-r262-kevin-v5-nonking-grpo-1(golden-comet-78) GPUs 4,5 challenger serve + v4 n80 →/tmp/r683_merged(~66G / 16 safetensor shards) - Local n80 vs live king reign34
(
cryptoDev23/Affine-5Dku3dYp9j-hk8161@55b7ffe0…) under wvk=7:- margin +0.002137, SE 0.000943, z=2.27, n=79
- bar
max(2·SE, δ=0.002)= 0.002 (~1.07×) - thought median 172 (≥80 ✓), B pass 0.304 (≥0.30 ✓, knife-edge)
- k=3, τ=0.03 (fail-closed if stamp ≠ v4)
- decision: WIN / Stage-5 licensed (
r683_decision_reign34_wvk7.json, p3738)
- Lineage: amplify R659 Short MidRank HiBeta Mega / R622 ~0.85× with 2× steps; ≠ R679 Short HiRank HiBeta UltraExtra / ≠ R653 Short MidRank LoBeta / ≠ R658 Short MidRank MidBeta / ≠ Online / ≠ GRPO
- Experiment path:
mining/experiments/r683-r252-offline-dpo-hialpha-midrank-hibeta-shortctx-ultraextrasteps-ep3-lolr
Intended use
SN120 Affine miner submission / evalsrv Reason v4 duel. Not a general chat model.
License
Follows base model + Affine mining artifacts policy.