| num_epoch | The number of passes to make through the experience buffer when performing gradient descent optimization. | PPO |
| num_layers | The number of hidden layers in the neural network. | PPO, BC |
| sequence_length | Defines how long the sequences of experiences must be while training. Only used for training with a recurrent neural network. See [Using Recurrent Neural Networks](Feature-Memory.md). | PPO, BC |
| summary_freq | How often, in steps, to save training statistics. This determines the number of data points shown by TensorBoard. | PPO, BC |