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PyTorch · Class

lr_scheduler.StepLR

StepLR changes an optimizer's learning rate at fixed epoch intervals. It multiplies the rate by gamma every step_size epochs.

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Syntax

StepLR(torch::optim::Optimizer& optimizer, unsigned step_size, double gamma = 0.1)

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  • LRScheduler
  • ReduceLROnPlateauScheduler
  • ExponentialLR
  • torch::optim::Optimizer

Source: Learning Rate Schedulers — PyTorch main documentation. Checked 2026-11-03.