Thank You for replying.  I don’t think the parameters arechanged after the learner loaded the pth file because its accuarcy is high after loaded the pth file.
I just hope that you are right that the learn.model has the learned weight and it is the model itself. Thus, how I check the learn.model’s parameters and layer dict key to compare the learn object’s own parameters and layer dict key? Please take your time if you are busy.