Record: Causal SLOT + Pre-quant TTT — val_bpb 1.0846 (3-seed)#3
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Record: Causal SLOT + Pre-quant TTT — val_bpb 1.0846 (3-seed)#3
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3-seed mean 1.0846 (std 0.0007). Beats merged SOTA (1.1147) by 0.030. Novel: provably causal eval-time delta optimization (causal SLOT). Unlike standard SLOT (PR openai#1240 proved 100% causal violation), delta is optimized using only backward-looking loss from already-scored positions. Combined with 6-epoch pre-quant AdamW TTT and coprime-stride multi-shard data loading. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
Novel Mechanism: Causal SLOT
Provably causal per-chunk delta optimization. Unlike standard SLOT (PR openai#1240 proved 100% causal violation), our delta is optimized using ONLY backward-looking loss from already-scored positions. Passes strict causality tests.
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