---
title: "MLActionClassifier.ModelParameters.ValidationData.dataSource(_:)"
framework: createml
role: symbol
role_heading: Case
path: "createml/mlactionclassifier/modelparameters-swift.struct/validationdata/datasource(_:)"
---

# MLActionClassifier.ModelParameters.ValidationData.dataSource(_:)

A validation dataset represented by a data source.

## Declaration

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

## See Also

### Designating validation data

- [MLActionClassifier.ModelParameters.ValidationData.split(strategy:)](createml/mlactionclassifier/modelparameters-swift.struct/validationdata/split(strategy:).md)
- [MLActionClassifier.ModelParameters.ValidationData.none](createml/mlactionclassifier/modelparameters-swift.struct/validationdata/none.md)