Data? Code? I vote for engineering and, there, sometimes applied math. E.g., once some colleagues and I gave a paper at an AAAI IAAI conference at Stanford.

Data? Code? I vote for engineering and, there, sometimes applied math. E.g., once some colleagues and I gave a paper at an AAAI IAAI conference at Stanford. All the good work was just engineering. For our work, basically just some code, later I found and published some applied math that did much better.