---
title: "ClikaRT::nn::SmoothL1LossOptions"
sidebar_label: "SmoothL1LossOptions"
description: "Settings of SmoothL1Loss: chain the setters, or assign the fields."
---

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<span class="api-kind api-kind--struct">struct</span>

**Header:** `ClikaRT/nn/generated/loss.h`

Settings of [`SmoothL1Loss`](./SmoothL1Loss.md): chain the setters, or assign the fields.

## Member functions

### reduction(ops::Reduction) {#reduction}

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[`SmoothL1LossOptions`](./SmoothL1LossOptions.md)`&` **`reduction`**([`ops::Reduction`](../ops/index.md#Reduction) `v`)

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Sets [`reduction`](./SmoothL1LossOptions.md#reduction), how the elementwise losses reduce.

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Declared in `ClikaRT/nn/generated/loss.h`, line 130

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### reduction() {#reduction-2}

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[`ops::Reduction`](../ops/index.md#Reduction) **`reduction`**() `const`

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Reads [`reduction`](./SmoothL1LossOptions.md#reduction).

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Declared in `ClikaRT/nn/generated/loss.h`, line 132

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### beta(double) {#beta}

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[`SmoothL1LossOptions`](./SmoothL1LossOptions.md)`&` **`beta`**(`double` `v`)

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Sets [`beta`](./SmoothL1LossOptions.md#beta), the switch point between the quadratic and the linear regime.

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Declared in `ClikaRT/nn/generated/loss.h`, line 138

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### beta() {#beta-2}

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`double` **`beta`**() `const`

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Reads [`beta`](./SmoothL1LossOptions.md#beta).

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Declared in `ClikaRT/nn/generated/loss.h`, line 140

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## Data members

### reduction\_ {#reduction_}

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[`ops::Reduction`](../ops/index.md#Reduction) **`reduction_`** `=` [`ops::Reduction::Mean`](../ops/index.md#Reduction)

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How the elementwise losses reduce. Default [`ops::Reduction::Mean`](../ops/index.md#Reduction).

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Declared in `ClikaRT/nn/generated/loss.h`, line 134

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### beta\_ {#beta_}

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`double` **`beta_`** `= 1.0`

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The switch point between the quadratic and the linear regime. Default `1.0`.

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Declared in `ClikaRT/nn/generated/loss.h`, line 143

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