https://developer.apple.com/machine-learning/
https://www.appcoda.com.tw/coreml-introduction/
https://developer.apple.com/videos/play/wwdc2017/703/
https://developer.apple.com/videos/play/wwdc2017/710/
簡單的說就是把NN的演算法hardcode到A11裡面去了
開發者可以不用懂ML的細節 把ML當黑盒子用即可