apply dataset and model

[AdoraLiu233]

Hi, i have been training with your work recently and i'am having some issues around how to change the path of dataset and model to my own. I found that in config.py and generate_pythia.py have places to change the path, however , after i changed it to mine, i got "AssertionError: datasets must be provided for dataset sources", do you know how to fix this?thanks so much !