Affine Layer

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Affine Layer

A fully-connected layer in a Neural Network. Affine means that each neuron in the previous layer is connected to each neuron in the current layer. In many ways, this is the “standard” layer of a Neural Network. Affine layers are often added on top of the outputs of Convolutional Neural Networks or Recurrent Neural Networks before making a final prediction. An affine layer is typically of the form y = f(Wx + b) where x are the layer inputs, W the parameters, b a bias vector, and f a nonlinear activation function