I Trained a Neural Network on Real Medical Data and Fit It in 8.9 kB of Pure C

I want to be honest with you from the start: I didn't set out to write this article. I set out to answer a question I had about my own tool — can Hasaki do regression? — and somewhere between loading a dataset of 3,658 real patient records and watching a microcontroller predict blood pressure from 14 numbers, I realized the answer deserved to be written down. The Question Nobody Asked Hasaki is a command-line neural network trainer I built for embedded systems developers. You tra...