code: def _compute_step(self, global_g):
      self.v = self.momentum * self.v + (1.0 - self.momentum) * global_g
      step = -self.stepsize * self.v
      return step
  
file_path: PARL/examples/ES/optimizers.py
imports: import numpy
label_desc: Use image node_id 2 for calling the SGD obj's underlying member method code with example usage: obj._compute_step(global_g) and returns: step