I'd love to learn more about what is in scope of the Library Innovation Lab projects. Is it targeting data.gov specifically or all government agency websites?
Given the rapid take downs of websites (cdc, usaid) do you have a prioritization framework for which website pages to prioritize or do you have "comprehensive" coverage of pages (in scope of the project)?
As you allude to, I've been having a hard time learn about what sort of duplicate work might be happening given that there isn't a great "archived coverage" source of truth for government websites (between projects such as End of Term archive, Internet archive, research labs, and independent archivists).
Your open questions are interesting. Content hashes for each page/resource would be a way to do quick comparisons, but I assume you might want to set some threshold to determine how much it's changed vs if it changed?
Is the second question about figuring out how to prioritize valuable stuff behind two depth traversals? (ex data.gov links to another website and that website has a csv download)