# Deep Learning Dictionary - Lightweight Crash Course

Deep Learning Course 1 of 6 - Level: Beginner

## Sigmoid Activation Function - Deep Learning Dictionary

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### Sigmoid Activation Function - Deep Learning Dictionary

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

One activation function, called $$\text{sigmoid}$$, maps its supplied inputs to a value in the interval $$(0,1)$$. For a given value $$x$$ passed to $$\text{sigmoid}$$, we define

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