[D] ML Research Topics (reasonably short)

So I’m starting my masters thesis project in ML ASAP and need a research topic. What areas (if any) are currently hot / feasible to do research in roughly 6 months with fairly limited compute access?

I’m more interested in theory / research heavy areas rather than applied. And probably happier to dig into some hard math rather than taking on a software engineering type project.

Any thoughts or general feedback very welcome! Thanks!

compute hot machinelearning project research theory thesis topics