qreps's Issues
Issues with Installing
Hi,
I tried to install the package by following the instructions provided in the readme however I cannot get past the third step:
pip install -e.[experiments]
Running which gives the following error:
You can see here that the GitHub link from which it tries to obtain the rllib has the next requirement (numpy) attached at the end, as I believe you are missing a comma in your setup.py.
But even after fixing that issue locally, I still obtain a very similar error:
I am running the code on macOS 12.0.1.
Confused about the Implementation of QREPS Agent
Hey,
I am confused about the dual implementation in the QREPS agent.
The code I am talking about is in qreps_algorithm in the QREPS class.
To be specific:
# Calculate weights.
weights_td = self.eta() * td # type: torch.Tensor
if weights_td.ndim == 1:
weights_td = weights_td.unsqueeze(-1)
dual = 1 / self.eta() * torch.logsumexp(weights_td, dim=-1)
dual += (1 - self.gamma) * value.squeeze(-1)
return Loss(dual_loss=dual.mean(), td_error=td)
As far as I understand, the last dimension in weights_td is always added and then the logsumexp operation does nothing.
Maybe, you can help me in understanding this or maybe there are changes between the version of the paper and the implementation visible here.
The current implementation seems to perform only good with the fixed seed 0.
When setting any other seed the learning breaks down completely.
I hope you can guide me in understanding this.
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