---
title: "topKGradient(_:input:kTensor:name:)"
framework: metalperformanceshadersgraph
role: symbol
role_heading: Instance Method
path: "metalperformanceshadersgraph/mpsgraph/topkgradient(_:input:ktensor:name:)"
---

# topKGradient(_:input:kTensor:name:)

Creates a TopKGradient operation and returns the result tensor.

## Declaration

```swift
func topKGradient(_ gradient: MPSGraphTensor, input source: MPSGraphTensor, kTensor: MPSGraphTensor, name: String?) -> MPSGraphTensor
```

## Parameters

- `gradient`: Tensor containing the incoming gradient.
- `source`: Tensor containing source data.
- `kTensor`: Tensor of the number of largest values to return.
- `name`: The name for the operation.

## Return Value

Return Value A valid MPSGraphTensor object.

## Discussion

Discussion Finds the K largest values along the minor dimension of the input. The input must have at least K elements along its minor dimension.