---
title: "init(device:beta1:beta2:epsilon:timeStep:optimizerDescriptor:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpsnnoptimizeradam/init(device:beta1:beta2:epsilon:timestep:optimizerdescriptor:)"
---

# init(device:beta1:beta2:epsilon:timeStep:optimizerDescriptor:)

## Declaration

```swift
init(device: any MTLDevice, beta1: Double, beta2: Double, epsilon: Float, timeStep: Int, optimizerDescriptor: MPSNNOptimizerDescriptor)
```