Files
foxhunt/crates
jgrusewski 38e65dace1 fix: checkpoints ranked by val_Sharpe not improvement_rate — rewind to best state
train-w2z55 rewound to epoch 0 (improvement_rate=17.3, val_Sharpe=17.3)
instead of epoch 20 (improvement_rate=0.4, val_Sharpe=45.4). The model
lost ALL learned behavior and couldn't re-learn at low cosine LR.

Fix: sort checkpoints by val_Sharpe (highest first). Rewind targets the
BEST state (val_Sharpe=45), not the fastest-climbing moment (epoch 0).
Added val_sharpe field to TrajectoryCheckpoint for proper ranking.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-15 19:14:40 +02:00
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