---
title: BNNSActivationFunctionGumbelMax
framework: accelerate
role: symbol
role_heading: Global Variable
path: accelerate/bnnsactivationfunctiongumbelmax
---

# BNNSActivationFunctionGumbelMax

An activation function that returns random numbers from the Gumbel distribution.

## Declaration

```swift
var BNNSActivationFunctionGumbelMax: BNNSActivationFunction { get }
```

## Discussion

Discussion This constant defines an activation function that returns values using the following operation:  GumbleMax(X)_i = MAX(−log(−log(alpha*Uniform(0,1)+beta)+beta) + Xj)

## See Also

### Raw Values

- [init(_:)](accelerate/bnnsactivationfunction/init(_:).md)
- [init(rawValue:)](accelerate/bnnsactivationfunction/init(rawvalue:).md)
- [rawValue](accelerate/bnnsactivationfunction/rawvalue.md)
- [BNNSActivationFunctionAbs](accelerate/bnnsactivationfunctionabs.md)
- [BNNSActivationFunctionCELU](accelerate/bnnsactivationfunctioncelu.md)
- [BNNSActivationFunctionClampedLeakyRectifiedLinear](accelerate/bnnsactivationfunctionclampedleakyrectifiedlinear.md)
- [BNNSActivationFunctionELU](accelerate/bnnsactivationfunctionelu.md)
- [BNNSActivationFunctionErf](accelerate/bnnsactivationfunctionerf.md)
- [BNNSActivationFunctionGELU](accelerate/bnnsactivationfunctiongelu.md)
- [BNNSActivationFunctionGELUApproximation](accelerate/bnnsactivationfunctiongeluapproximation.md)
- [BNNSActivationFunctionGELUApproximation2](accelerate/bnnsactivationfunctiongeluapproximation2.md)
- [BNNSActivationFunctionGELUApproximationSigmoid](accelerate/bnnsactivationfunctiongeluapproximationsigmoid.md)
- [BNNSActivationFunctionGumbel](accelerate/bnnsactivationfunctiongumbel.md)
- [BNNSActivationFunctionHardShrink](accelerate/bnnsactivationfunctionhardshrink.md)
- [BNNSActivationFunctionHardSigmoid](accelerate/bnnsactivationfunctionhardsigmoid.md)