Hyperparameter tuning, FocalDiceLoss, and 5M/10M cross-regime transfer evaluation#21

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sridhs21 wants to merge 7 commits intomainfrom

feature/hyperparameter-tuning

Commits on Nov 19, 2025

Reduce augmentation probabilities to fix underfitting
sridhs21
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Commits on Dec 2, 2025

Fix augmentation bug: apply brightness/contrast globally to preserve physical field relationships
sridhs21
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Commits on Dec 25, 2025

reverting percentages back to original for testing purposes
sridhs21
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Commits on Jan 27, 2026

Fixed issue where on-the-fly augmentation was mutating caches base frames via in-place cutout
sridhs21
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Commits on Feb 14, 2026

Add Optuna hyperparameter tuning with scheduler options and fixed validation crops
sridhs21
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Commits on Apr 10, 2026

Added a bunch of new CLI args to XPointMLTest.py like baseChannels, posRatio, lossFunction, warmupEpochs, and swa so we can actually tune all the stuff that was hardcoded before, especially base_ch…
Swaroop Sridhar
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Commits on May 7, 2026

Add parallel cache build with env-var path overrides (RC_EXTRACT_DIR, RC_CACHE_BASE) for ramdisk staging, and repoint transfer eval to the production checkpoint testdir_2026-04-02-13-23-05. XPointM…
Swaroop Sridhar
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