Perceptron

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The basic building block of neural networks. Computes a weighted sum of inputs plus a bias, then applies an activation function. Multiple perceptrons form layers; stacking layers creates deep networks.

Key Properties

  • Weighted sum: z = w1x1 + w2x2 + … + b
  • Activation: output = f(z)
  • Single perceptron can only learn linearly separable functions

deep-learning perceptron neuron