---
title: "init(validation:batchSize:maximumIterations:augmentationOptions:algorithm:)"
framework: createml
role: symbol
role_heading: Initializer
path: "createml/mlhandposeclassifier/modelparameters-swift.struct/init(validation:batchsize:maximumiterations:augmentationoptions:algorithm:)"
---

# init(validation:batchSize:maximumIterations:augmentationOptions:algorithm:)

Creates a set of training session parameters for a hand pose classifier task.

## Declaration

```swift
init(validation: MLHandPoseClassifier.ModelParameters.ValidationData = .split(strategy: .automatic), batchSize: Int = MLHandPoseClassifier.__Defaults.batchSize, maximumIterations: Int = MLHandPoseClassifier.__Defaults.maximumIterations, augmentationOptions: MLHandPoseClassifier.ImageAugmentationOptions = [], algorithm: MLHandPoseClassifier.ModelParameters.ModelAlgorithmType = .gcn)
```

## Discussion

Discussion validation: An MLHandPoseClassifier.ModelParameters.ValidationData instance. batchSize: The number of images the training session uses for each of its training iterations. maximumIterations: The largest number of training iterations the training session can use. augmentationOptions: The variations the training session uses to add more variety to its training dataset. algorithm: The algorithm the training session uses to train the hand pose classifier.