---
title: validation
framework: createml
role: symbol
role_heading: Instance Property
path: createml/mlhandactionclassifier/modelparameters-swift.struct/validation
---

# validation

A dataset the hand action classifier task uses to evaluate the model that’s distinct from the training dataset.

## Declaration

```swift
var validation: MLHandActionClassifier.ModelParameters.ValidationData
```

## Discussion

Discussion The task produces validationMetrics by evaluating the model with the validation dataset.

## See Also

### Accessing hand action training parameters

- [maximumIterations](createml/mlhandactionclassifier/modelparameters-swift.struct/maximumiterations.md)
- [batchSize](createml/mlhandactionclassifier/modelparameters-swift.struct/batchsize.md)
- [targetFrameRate](createml/mlhandactionclassifier/modelparameters-swift.struct/targetframerate.md)
- [predictionWindowSize](createml/mlhandactionclassifier/modelparameters-swift.struct/predictionwindowsize.md)
- [algorithm](createml/mlhandactionclassifier/modelparameters-swift.struct/algorithm.md)
- [augmentationOptions](createml/mlhandactionclassifier/modelparameters-swift.struct/augmentationoptions.md)