Peek at the Backpropagation Algorithm — The term backpropagation and its general use in neural networks were introduced in Rumelhart, Hinton & Williams (1986a), then elaborated and popularized in Rumelhart, Hinton & Williams (1986b). But the technique was independently rediscovered many times dating back to the 1960s. When fitting to a neural network, backpropagation calculates the…