title: Quality attributes and metric in training DDPG model in Matlab
body: <p>I want to ask if there are any quality attributes or metrics to look into during the training of the DDPG model in a reinforcement learning toolbox in MATLAB.
  I tried to check for the performance through the stability of the AverageReward but still not clear.
  I would appreciate it if someone could point me to some quality concerns to look into during the training model.
  Thank you in advance.</p>