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# MLCSGDOptimizer

An optimizer that represents the stochastic gradient decent algorithm.

```
class MLCSGDOptimizer
```

## Topics

### Creating an SGD Optimizer

[`init(descriptor:)`](/documentation/MLCompute/MLCSGDOptimizer/init(descriptor:))

Creates an SGD optimizer with the descriptor you specify.

[`init(descriptor:momentumScale:usesNesterovMomentum:)`](/documentation/MLCompute/MLCSGDOptimizer/init(descriptor:momentumScale:usesNesterovMomentum:))

Create an SGD optimizer with the descriptor, momentum scale, and option to enable Nesterov momentum that you specify.

### Inspecting an SGD Optimizer

[`momentumScale`](/documentation/MLCompute/MLCSGDOptimizer/momentumScale)

A hyper-parameter specifying the momentum factor.

[`usesNesterovMomentum`](/documentation/MLCompute/MLCSGDOptimizer/usesNesterovMomentum)

A Boolean that indicates whether you enable Nesterov momentum.


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