---
title: "init(descriptor:)"
framework: ML Compute
role: symbol
role_heading: Initializer
platforms: [iOS 14.0+, iPadOS 14.0+, Mac Catalyst 14.0+, macOS 11.0+, tvOS 14.0+]
path: "mlcompute/mlcsgdoptimizer/init(descriptor:)"
---

# init(descriptor:)

Creates an SGD optimizer with the descriptor you specify.

## Declaration

```swift
convenience init(descriptor optimizerDescriptor: MLCOptimizerDescriptor)
```

## Parameters

- `optimizerDescriptor`: An object you use to configure the optimizer.

## Return Value

Return Value An SGD optimizer.

## Discussion

Discussion Sets momentumScale to 0.0 and usesNesterovMomentum to false by default.

## See Also

### Creating an SGD Optimizer

- [init(descriptor:momentumScale:usesNesterovMomentum:)](mlcompute/mlcsgdoptimizer/init(descriptor:momentumscale:usesnesterovmomentum:).md)