code: def __init__(self, prox_center=0, t0=10, kappa=0.75, gamma=0.05):
      self.prox_center = prox_center
      self.t0 = t0
      self.kappa = kappa
      self.gamma = gamma
      self.reset()
  
label_desc: Use image node_id 1 to create a new DualAveraging object  with example: obj = DualAveraging(prox_center, t0, kappa, gamma)