---
title: "MLActivityClassifier.ModelParameters.Validation.dataSource(_:)"
framework: Create ML
role: symbol
role_heading: Case
platforms: [macOS 14.0+]
path: "createml/mlactivityclassifier/modelparameters-swift.struct/validation-swift.enum/datasource(_:)"
---

# MLActivityClassifier.ModelParameters.Validation.dataSource(_:)

A validation dataset represented by a data source.

## Declaration

```swift
case dataSource(MLActivityClassifier.DataSource)
```

## See Also

### Specifying validation data

- [MLActivityClassifier.ModelParameters.Validation.split(strategy:)](createml/mlactivityclassifier/modelparameters-swift.struct/validation-swift.enum/split(strategy:).md)
- [MLActivityClassifier.ModelParameters.Validation.none](createml/mlactivityclassifier/modelparameters-swift.struct/validation-swift.enum/none.md)