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# MLSoundClassifier.ModelParameters.ValidationData

The source of a validation dataset for a sound classifier.

```
enum ValidationData
```

## Topics

### Designating validation data

[`case split(strategy: MLSplitStrategy)`](/documentation/CreateML/MLSoundClassifier/ModelParameters-swift.struct/ValidationData/split(strategy:))

A validation dataset derived by randomly selecting a portion of the sound classifier’s training dataset
using the split strategy.

[`case dataSource(MLSoundClassifier.DataSource)`](/documentation/CreateML/MLSoundClassifier/ModelParameters-swift.struct/ValidationData/dataSource(_:))

A validation dataset represented by a data source.

[`case dictionary([String : [URL]])`](/documentation/CreateML/MLSoundClassifier/ModelParameters-swift.struct/ValidationData/dictionary(_:))

A validation dataset represented by a dictionary.

[`case none`](/documentation/CreateML/MLSoundClassifier/ModelParameters-swift.struct/ValidationData/none)

An empty validation dataset that skips the model validation
phase after training.


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