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学习率调度器

  1. LambdaLR:将每个参数组的学习率设置为初始学习率乘以一个给定函数的值。

    参数:lr_lambda(函数或列表):一个函数,它根据整数参数 epoch 计算一个乘法因子,或者是一个这样的函数列表,其中每个函数对应优化器 optimizer.param_groups 中的一个组。

  2. MultiplicativeLR:将每个参数组的学习率乘以指定函数中给出的因子。

    参数:lr_lambda(函数或列表):一个函数,它根据整数参数 epoch 计算一个乘法因子,或者是一个这样的函数列表,其中每个函数对应优化器 optimizer.param_groups 中的一个组。

  3. StepLR:每经过 step_size 个周期,就将每个参数组的学习率按照 gamma 的比例衰减。请注意,这种衰减可以与来自该调度器外部的其他对学习率的变化同时发生。

    参数:step_size(整数):学习率衰减的周期。 gamma(浮点数):学习率衰减的乘法因子。

  4. MultiStepLR:当训练周期(epoch)达到某个里程碑时,每个参数组的学习率会按 gamma 因子进行衰减。请注意,这种衰减可以与来自外部调度器的其他学习率变化同时发生。

    参数:milestones(列表):训练周期索引的列表,要求必须是递增的。 gamma(浮点数):学习率衰减时所使用的乘法因子。

  5. ConstantLR:

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