V2EX forward pass

Forward Pass

释义 Definition

forward pass(常见于机器学习/神经网络)指在给定输入后,数据从输入层依次经过各层计算,最终得到输出(预测值)的前向传播/前向计算过程。
(在体育语境中也可指“向前传球”,如美式橄榄球的前传。)

发音 Pronunciation

/frwrd ps/

例句 Examples

The model makes a prediction during the forward pass.
模型在前向传播过程中做出预测。

During training, we run a forward pass to compute the loss, then use backpropagation to update the weights.
在训练时,我们先进行一次前向传播来计算损失,然后用反向传播更新权重。

词源 Etymology

forward 意为“向前的/前向的”,pass 在这里有“通过、传递(信息/球)”的含义。组合起来,表示信息或球“向前传递”的动作或过程。在神经网络中,这个说法形象地对应“信号从输入到输出一路向前流动”的计算流程。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Ian Goodfellow, Yoshua Bengio, Aaron Courville,《Deep Learning》:在讲解神经网络计算图与训练流程时使用 forward pass
  • Michael Nielsen,《Neural Networks and Deep Learning》:在说明前向计算与反向传播的关系时使用 forward pass
  • Christopher M. Bishop,《Pattern Recognition and Machine Learning》:在相关模型的推断与计算流程讨论中使用 forward pass(常见于神经网络/图模型语境)。
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