---
title: epsilon
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/bnns/adamwoptimizer/epsilon
---

# epsilon

The epsilon value you use to improve numerical stability.

## Declaration

```swift
var epsilon: Float { get set }
```

## See Also

### Inspecting the Properties of an AdamW Optimizer

- [learningRate](accelerate/bnns/adamwoptimizer/learningrate.md)
- [beta1](accelerate/bnns/adamwoptimizer/beta1.md)
- [beta2](accelerate/bnns/adamwoptimizer/beta2.md)
- [timeStep](accelerate/bnns/adamwoptimizer/timestep.md)
- [gradientScale](accelerate/bnns/adamwoptimizer/gradientscale.md)
- [weightDecay](accelerate/bnns/adamwoptimizer/weightdecay.md)
- [gradientClipping](accelerate/bnns/adamwoptimizer/gradientclipping.md)
- [BNNS.GradientClipping](accelerate/bnns/gradientclipping.md)
- [accumulatorCountMultiplier](accelerate/bnns/adamwoptimizer/accumulatorcountmultiplier.md)