Fine tuning with RL #105

Hi folks

Is there a recommended way to load a pretrained model for RL without loading the entire checkpoint?

I'm training with TD3 and I want to refine the model with new data and a modified reward function. If I call torchfort_rl_off_policy_create_system("td3_system",... then torchfort_load_model("td3_system",... with the filename for a saved checkpoint policy/model.pt I get an Invalid usage. (Invalid model name provided.) error.

I guess one approach would be to load the entire checkpoint then try to kill the history, but I don't know how to do that either.

How do I set up for fine tuning?

Ciao
Terry