# Deep Learning Dictionary - Lightweight Crash Course

Deep Learning Course 1 of 6 - Level: Beginner

## Relu Activation Function - Deep Learning Dictionary

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### ReLU Activation Function - Deep Learning Dictionary

In a neural network, an activation function applies a nonlinear transformation to the output of a layer.

One of the most widely used activation functions today called $$\text{ReLU}$$, short for Rectified Linear Unit, transforms its input to the maximum of either $$0$$ or the input itself.

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