artifacts/lora_oxygen_vs_all_task.md

Oxygen-Only LoRA vs All-Task LoRA

Both runs use fold 0, ESM-2 t12, LoRA r=8, 1 epoch on Lambda A100 SXM4.

Target	All-task LoRA	Oxygen-only LoRA	Baseline	Readout
optimal_temperature_c MAE	3.6660	32.2504	2.6743	ignored by oxygen-only loss
optimal_ph MAE	0.5598	7.0462	0.4685	ignored by oxygen-only loss
salt_tolerance_pct MAE	1.8154	2.0823	1.9171	not improved by oxygen-only loss
oxygen_requirement macro F1	0.9448	0.9168	0.4020	oxygen-only worse than all-task

Conclusion

Oxygen-only training did not beat the all-task LoRA run on the oxygen target: 0.9168 macro F1 vs 0.9448 macro F1. The all-task LoRA checkpoint remains the better fold-0 result. The oxygen-only checkpoint is saved locally for inspection but should stay out of git.

Artifacts

• artifacts/lora/fold0_results_oxygen.json
• artifacts/lora/lambda_fold0_oxygen_1ep_20260517T103524Z.log
• local-only checkpoint: artifacts/lora/fold0_best_oxygen.pt