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Training (red, solid) and validation (blue, dashed) cost function values by epoch for the proposed network. The validation data sets were evaluated once every 5 epochs. (1) PLTF results evaluated within the 30 cm mask for chain B (Eq. 2). (2) Cost computed for the final network output for chain A, YA, over the 50 cm FoV of chain A (Eq. 5). (3) Cost computed for the final network output for chain B, YB, within the 30 cm mask for chain B (Eq. 6).
