Yes, it’s still unclear how to measure modification magnitude in general (or if that’s even possible to do in a principled way) but for modifications which are limited to text, you could use the entropy of the text and to me that seems like a fairly reasonable and somewhat fundamental measure (according to information theory). Thank you for the references in your other comment, I’ll make sure to give them a read!
Yes, it’s still unclear how to measure modification magnitude in general (or if that’s even possible to do in a principled way) but for modifications which are limited to text, you could use the entropy of the text and to me that seems like a fairly reasonable and somewhat fundamental measure (according to information theory). Thank you for the references in your other comment, I’ll make sure to give them a read!