Any interest in also trying Parakeet (https://github.com/iskandr/parakeet) for the backend? I'm curious to see how the performance would compare with Numba. I also have a semi-usable Builder API which constructs typed functions at a higher-level than llvmpy.

Very inspiring talk! Is it possible to deal with continuous data in those matrices or is it more oriented around discrete values?

Thanks! Our approach supports both discrete and continuous values. It is mainly optimized for the use case where you want to aggregate continuous variables over discrete filters.