---
title: "init(type:kernelSizes:strides:dilationRates:paddingPolicy:)"
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/mlcpoolingdescriptor/init(type:kernelsizes:strides:dilationrates:paddingpolicy:)"
---

# init(type:kernelSizes:strides:dilationRates:paddingPolicy:)

Creates a pooling descriptor with the pooling function type, kernel sizes, strides, dilation rates, and padding policy that you specify.

## Declaration

```swift
convenience init(type: MLCPoolingType, kernelSizes: (height: Int, width: Int), strides: (y: Int, x: Int) = (y: 1, x: 1), dilationRates: (y: Int, x: Int) = (y: 1, x: 1), paddingPolicy: MLCPaddingPolicy = .same)
```

## Parameters

- `type`: The pooling function type.
- `kernelSizes`: A tuple that contains the kernel sizes for y and x.
- `strides`: A tuple that contains the kernel strides for y and x.
- `dilationRates`: A tuple that contains the dilation rates for y and x.
- `paddingPolicy`: The padding policy.