Earlier quoted context omitted.
> renaming PDFs Sorry, I didn't understand. Why do you need ML tool for renaming PDFs? or did you mean rephrasing or rewriting in a different format?
Maybe they mean walking a file tree and cleaning up file names to match the titles on the covers of them more accurately?
Exactly. You download something from arxiv and the filename has no meaningful content in it. Generally speaking, you want the filename to be descriptive in some way, extracting the title of the document is a good start.