"If you built on it, cite it", is necessary but does not suffice. Most papers have a related work section that describes all work similar to your paper. In hot

"If you built on it, cite it", is necessary but does not suffice. Most papers have a related work section that describes all work similar to your paper. In hot areas, such as deep learning, some of the related work may have been done in parallel with your work, so it did not inform it. If this related work is uncited on arxiv, you find it when you are about done, and it had no influence on your work, do you cite? Reviewers sometimes demand this. I've been told a rule of thumb is that if a related unrefereed arxiv paper has been cited six or more times, with the justification being that this means it is somewhat well known once it has some citations.