誤差 ごさ ぎゃく伝播 でんぱ ほうじゃなかったです
gosa gyakudempahōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 誤差逆伝播法

1. Wasn't backpropagation.

Past/Perfective
Negative
Polite
Casual Register
Computing