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# MLCReductionLayer

A layer that reduces tensor values across a specific dimension to a scalar value.

```
class MLCReductionLayer
```

## Overview

Use this layer to perform reduction operations on a given dimension. The output of this layer is a tensor of the same shape as the source tensor, except the layer sets the dimension to `1`.

## Topics

### Creating Reduction Layers

[`init(reductionType:dimension:)`](/documentation/MLCompute/MLCReductionLayer/init(reductionType:dimension:))

Creates a reduction layer using the reduction type and dimension you specify.

[`init(reductionType:dimensions:)`](/documentation/MLCompute/MLCReductionLayer/init(reductionType:dimensions:))

Creates a reduction layer using the reduction type and dimensions you specify.

[`layerWithReductionType:dimensions:`](/documentation/MLCompute/MLCReductionLayer/layerWithReductionType:dimensions:)

Creates a reduction layer using the reduction type and dimensions you specify.

[`MLCReductionType`](/documentation/MLCompute/MLCReductionType)

Constants that describe a reduction operation type.

### Inspecting Reduction Layers

[`reductionType`](/documentation/MLCompute/MLCReductionLayer/reductionType)

The function reduction type the system uses for reduction.

[`dimension`](/documentation/MLCompute/MLCReductionLayer/dimension)

The dimension to perform the reduction operation on.

[`dimensions`](/documentation/MLCompute/MLCReductionLayer/dimensions-9oph6)

The dimensions to perform the reduction operation on.

[`dimensions`](/documentation/MLCompute/MLCReductionLayer/dimensions-4359b)

The dimensions to perform the reduction operation on.


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