V2EX linear layer

Linear Layer

释义 Definition

线性层:机器学习/深度学习中常见的一种神经网络层,对输入做线性(更准确说是仿射)变换:\(y = Wx + b\)。常用于特征变换、分类器的最后一层、回归输出等。(在框架里也常叫 fully connected layer / dense layer。)

发音 Pronunciation (IPA)

/lnir ler/

例句 Examples

A linear layer maps input features to output features.
线性层把输入特征映射到输出特征。

After the convolution blocks, the model flattens the tensor and sends it through a linear layer to produce class logits.
在卷积模块之后,模型将张量展平,并通过线性层生成分类的 logits(未归一化得分)。

词源 Etymology

linear 源自拉丁语 linearis(“线的、成直线的”,来自 linea “线”);layer 来自动词 lay(“放置、铺放”)的相关用法,表示“层”。组合成 linear layer 主要是现代机器学习语境中的术语,指执行 \(Wx+b\) 的层。

相关词 Related Words

文学/著作中的出现 Literary Works

  • Deep Learning(Ian Goodfellow, Yoshua Bengio, Aaron Courville)在神经网络结构与线性/仿射变换相关章节中频繁出现。
  • Pattern Recognition and Machine Learning(Christopher M. Bishop)在广义线性模型、神经网络与特征映射讨论中常见。
  • Deep Learning with Python(Franois Chollet)在 Keras/模型搭建示例中以 Dense (linear) 等形式出现。
  • Neural Networks and Deep Learning(Michael Nielsen)讲解全连接层与线性变换时常用到该概念。
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