I admit I don’t have much experience with those, I’m a Keras and CNTK guy but the principles will be the same: marshal your data into a huge matrix of floats/on

I admit I don’t have much experience with those, I’m a Keras and CNTK guy but the principles will be the same: marshal your data into a huge matrix of floats/one-hot and hand it off to training where it will spend 99.9% of it’s time. I am a fan of strong/static typing and was once very active in the OCaml community but that just struck me as a very odd thing for the OP to say... it’s just not something that people doing DL worry about. It could be valuable in the marshalling phase but that all happens before DL begins and (in my experience) in a separate program.