Backpropagation

A simple neural network with two input units and one output unit

Error surface of a linear neuron for a single training case.

Error surface of a linear neuron with two input weights

Backpropagation, an abbreviation for "backward propagation of errors", is a common method of training artificial neural networks used in conjunction with an optimization method such as gradient descent. The method calculates the gradient of a loss function with respect to all the weights in the network. The gradient is fed to the optimization method which in turn uses it to update the weights, in an attempt to minimize the loss function.

单词	Back prop
释义	Back prop 原声例句伊坦·弗洛美 Hale sat with his feet up on the stove, his back propped against a battered desk strewn with papers: the place, like the man, was warm, genial and untidy. 黑尔坐着，双脚放在炉子上，背靠在一张破旧的桌子上，桌子上散落着文件：这个地方和那个人一样，温暖、和蔼、凌乱。英语百科 Backpropagation Backpropagation, an abbreviation for "backward propagation of errors", is a common method of training artificial neural networks used in conjunction with an optimization method such as gradient descent. The method calculates the gradient of a loss function with respect to all the weights in the network. The gradient is fed to the optimization method which in turn uses it to update the weights, in an attempt to minimize the loss function.
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Back prop

Backpropagation