---
title: "init(featureExtractor:validation:maxIterations:augmentationOptions:)"
framework: createml
role: symbol
role_heading: Initializer
path: "createml/mlimageclassifier/modelparameters-swift.struct/init(featureextractor:validation:maxiterations:augmentationoptions:)"
---

# init(featureExtractor:validation:maxIterations:augmentationOptions:)

Creates a new set of training parameters for an image classifier with a validation dataset.

## Declaration

```swift
init(featureExtractor: MLImageClassifier.FeatureExtractorType = .scenePrint(revision: 1), validation: MLImageClassifier.ModelParameters.ValidationData = .split(strategy: .automatic), maxIterations: Int = 25, augmentationOptions: MLImageClassifier.ImageAugmentationOptions = [])
```

## Parameters

- `featureExtractor`: The feature extractor you want Create ML to use during the training session.
- `validation`: A validation dataset.
- `maxIterations`: The maximum number of training iterations to use during training. The default is 25.
- `augmentationOptions`: The image augmentation options to use to increase the training data variety.

## See Also

### Creating parameters

- [init(validation:maxIterations:augmentation:algorithm:)](createml/mlimageclassifier/modelparameters-swift.struct/init(validation:maxiterations:augmentation:algorithm:).md)
- [init(featureExtractor:validationData:maxIterations:augmentationOptions:)](createml/mlimageclassifier/modelparameters-swift.struct/init(featureextractor:validationdata:maxiterations:augmentationoptions:).md)
- [MLImageClassifier.ModelParameters.ClassifierType](createml/mlimageclassifier/modelparameters-swift.struct/classifiertype.md)
- [MLImageClassifier.ModelParameters.ModelAlgorithmType](createml/mlimageclassifier/modelparameters-swift.struct/modelalgorithmtype.md)