---
title: MLCMultiheadAttentionDescriptor
framework: ML Compute
role: symbol
role_heading: Class
platforms: [iOS 14.0+, iPadOS 14.0+, Mac Catalyst 14.0+, macOS 11.0+, tvOS 14.0+]
path: mlcompute/mlcmultiheadattentiondescriptor
---

# MLCMultiheadAttentionDescriptor

A configuration object you use to create a multi-head attention layer.

## Declaration

```swift
class MLCMultiheadAttentionDescriptor
```

## Topics

### Creating Multi-Head Attention Descriptors

- [init(modelDimension:headCount:)](mlcompute/mlcmultiheadattentiondescriptor/init(modeldimension:headcount:).md)
- [init(modelDimension:keyDimension:valueDimension:headCount:dropout:hasBiases:hasAttentionBiases:addsZeroAttention:)](mlcompute/mlcmultiheadattentiondescriptor/init(modeldimension:keydimension:valuedimension:headcount:dropout:hasbiases:hasattentionbiases:addszeroattention:).md)

### Inspecting Multi-Head Attention Descriptors

- [modelDimension](mlcompute/mlcmultiheadattentiondescriptor/modeldimension.md)
- [keyDimension](mlcompute/mlcmultiheadattentiondescriptor/keydimension.md)
- [valueDimension](mlcompute/mlcmultiheadattentiondescriptor/valuedimension.md)
- [headCount](mlcompute/mlcmultiheadattentiondescriptor/headcount.md)
- [dropout](mlcompute/mlcmultiheadattentiondescriptor/dropout.md)
- [hasBiases](mlcompute/mlcmultiheadattentiondescriptor/hasbiases.md)
- [hasAttentionBiases](mlcompute/mlcmultiheadattentiondescriptor/hasattentionbiases.md)
- [addsZeroAttention](mlcompute/mlcmultiheadattentiondescriptor/addszeroattention.md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Creating Multi-Head Attention Layers

- [init(descriptor:weights:biases:attentionBiases:)](mlcompute/mlcmultiheadattentionlayer/init(descriptor:weights:biases:attentionbiases:).md)