Task 2: Lens Finding

 Finished up Test I (mostly). Now onto Specific Test II - Lens Finding. Downloaded the data... wow, way more non-lenses than lenses. This class imbalance is serious! Accuracy won't mean much here. Need to focus on ROC AUC and maybe precision/recall for the lens class. Sticking with ConvNeXt V2 but need to add class weighting to the loss function. This feels more like a real-world astro problem.

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