> Now they just use an end-to-end neural network You've missed my point. The thing is that building the ML model is NOT the hard part of machine learning in i

> Now they just use an end-to-end neural network You've missed my point. The thing is that building the ML model is NOT the hard part of machine learning in industry. The hard part is building an infrastructure that can make that machine learning model do something useful. It is much harder than people imagine. See for example this great paper by google for more details : https://static.googleusercontent.com/media/research.google.com/en//pubs/archive/43146.pdf https://static.googleusercontent.com/media/research.google.c...