you know as the original teacher you should use as good as possible a teacher model you can find second a large amount of unlabeled data is necessary for better performance okay so if you want to do this you better get a large large amount of extra data because that's one thing that makes the student perform better soft pseudo labels work better than hard pseudo labels for out of domain data in certain cases fourth a large student model is important to enable the student to learn a more more powerful model okay so because usually this um