Method GetLearningRate

include/singa/model/optimizer.h:84–89

    learning_rate_generator_ = func;
  }
  float GetLearningRate(int step) {
    if (learning_rate_generator_)
      return learning_rate_generator_(step);
    else
      return 0;
  }

 protected:
  function<float(int)> learning_rate_generator_;