GAE parameter name should be lambda not tau. And why is default 1.0? about pytorch-a3c HOT 4 CLOSED

Implementation of A3C (https://arxiv.org/abs/1602.01783).

____________________________________________________________________________________________________

                            A3C policy model architecture

   Image Processing module -> Flattened output ->     Policy Learning Module    --->  Final output
           ______________________                ___________________________________
          |     _______    ____ |     __       |      ___________                 |
image ->  | 4x |conv2d| + |ELU| |    |__|      |     |   LSTM   | --> Critic FC-> | -> value
          |    |______|   |___| | -> |__| -->  | --> |__________| --> Actor FC -> | -> policy logits
          |                     |    |__|      |        ^   ^                     | -> (hx, cx)
          |                     |    |__|      |        |   |                     |
          |_____________________|              |  prev cx  hx                     |
                                               |__________________________________|
____________________________________________________________________________________________________

    Processes an input image (with num_input_channels) with 4 conv layers,
    interspersed with 4 elu activation functions. The output of the final layer is then flattened
    and passed to an LSTM (with previous or initial hidden and cell states (hx and cx)).
    The new hidden state is used as an input to the critic and value nn.Linear layer heads,
    The final output is then the predicted value, action logits, hx and cx.
    """