Thank you, this worked. Do you know if it is correct to have -100 as the label for the CLS and SEP tokens when doing token classification? As I understand it, these tokens are required, even if I don’t really use them for anything, since that’s how BERT was pretrained, but I’m not sure how to label them. Maybe they should have the label 0 instead, like the rest of the tokens that don’t belong to any of the other classes, and only the PAD tokens should have the label -100?