---
title: MLProgress.Metric.validationLoss
framework: createml
role: symbol
role_heading: Case
path: createml/mlprogress/metric/validationloss
---

# MLProgress.Metric.validationLoss

The metric for the model’s validation loss.

## Declaration

```swift
case validationLoss
```

## See Also

### Retrieving metric keys

- [MLProgress.Metric.accuracy](createml/mlprogress/metric/accuracy.md)
- [MLProgress.Metric.contentLoss](createml/mlprogress/metric/contentloss.md)
- [MLProgress.Metric.loss](createml/mlprogress/metric/loss.md)
- [MLProgress.Metric.maximumError](createml/mlprogress/metric/maximumerror.md)
- [MLProgress.Metric.rootMeanSquaredError](createml/mlprogress/metric/rootmeansquarederror.md)
- [MLProgress.Metric.styleLoss](createml/mlprogress/metric/styleloss.md)
- [MLProgress.Metric.stylizedImageURL](createml/mlprogress/metric/stylizedimageurl.md)
- [MLProgress.Metric.validationAccuracy](createml/mlprogress/metric/validationaccuracy.md)
- [MLProgress.Metric.validationMaximumError](createml/mlprogress/metric/validationmaximumerror.md)
- [MLProgress.Metric.validationRootMeanSquaredError](createml/mlprogress/metric/validationrootmeansquarederror.md)