Problem of frozen_keys in 02_finetune_new_observation_action.py

[BUAAZhangHaonan]

I found a small problem in examples/02_finetune_new_observation_action.py:

frozen_keys.append("BlockTransformer_0")

By printing param_partitions in freeze_weights, I found that it cannot effectively freeze the parameters of BlockTransformer_0. I think it should be expressed as follows:

frozen_keys.append("octo_transformer.BlockTransformer_0.*")

In addition, I found that all frozen modes are not as good as training from scratch (of course, the default *hf_model* needs to be frozen)