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. Author manuscript; available in PMC: 2021 Oct 2.
Published in final edited form as: Med Phys. 2021 Aug 3;48(9):4784–4798. doi: 10.1002/mp.15075

FIGURE 1.

FIGURE 1

Optimal DIR hyper-parameter selection via hyper-parameter optimization. The optimal hyper-parameter values for input grid size and gradient step were 32 and 0.3 for HN dataset in (a) and (b) and were 32 and 0.1 for lung dataset in (c) and (d).