---
title: MLBoostedTreeRegressor.ModelParameters
framework: createml
role: symbol
role_heading: Structure
path: createml/mlboostedtreeregressor/modelparameters-swift.struct
---

# MLBoostedTreeRegressor.ModelParameters

Parameters that affect the process of training a model.

## Declaration

```swift
struct ModelParameters
```

## Topics

### Creating parameters

- [init(validation:maxDepth:maxIterations:minLossReduction:minChildWeight:randomSeed:stepSize:earlyStoppingRounds:rowSubsample:columnSubsample:)](createml/mlboostedtreeregressor/modelparameters-swift.struct/init(validation:maxdepth:maxiterations:minlossreduction:minchildweight:randomseed:stepsize:earlystoppingrounds:rowsubsample:columnsubsample:).md)
- [init(validationData:maxDepth:maxIterations:minLossReduction:minChildWeight:randomSeed:stepSize:earlyStoppingRounds:rowSubsample:columnSubsample:)](createml/mlboostedtreeregressor/modelparameters-swift.struct/init(validationdata:maxdepth:maxiterations:minlossreduction:minchildweight:randomseed:stepsize:earlystoppingrounds:rowsubsample:columnsubsample:).md)
- [MLBoostedTreeRegressor.ModelParameters.ValidationData](createml/mlboostedtreeregressor/modelparameters-swift.struct/validationdata-swift.enum.md)

### Accessing parameters

- [columnSubsample](createml/mlboostedtreeregressor/modelparameters-swift.struct/columnsubsample.md)
- [earlyStoppingRounds](createml/mlboostedtreeregressor/modelparameters-swift.struct/earlystoppingrounds.md)
- [maxDepth](createml/mlboostedtreeregressor/modelparameters-swift.struct/maxdepth.md)
- [maxIterations](createml/mlboostedtreeregressor/modelparameters-swift.struct/maxiterations.md)
- [minChildWeight](createml/mlboostedtreeregressor/modelparameters-swift.struct/minchildweight.md)
- [minLossReduction](createml/mlboostedtreeregressor/modelparameters-swift.struct/minlossreduction.md)
- [randomSeed](createml/mlboostedtreeregressor/modelparameters-swift.struct/randomseed.md)
- [rowSubsample](createml/mlboostedtreeregressor/modelparameters-swift.struct/rowsubsample.md)
- [stepSize](createml/mlboostedtreeregressor/modelparameters-swift.struct/stepsize.md)
- [validationData](createml/mlboostedtreeregressor/modelparameters-swift.struct/validationdata-swift.property.md)
- [validation](createml/mlboostedtreeregressor/modelparameters-swift.struct/validation.md)

### Describing parameters

- [description](createml/mlboostedtreeregressor/modelparameters-swift.struct/description.md)
- [debugDescription](createml/mlboostedtreeregressor/modelparameters-swift.struct/debugdescription.md)
- [playgroundDescription](createml/mlboostedtreeregressor/modelparameters-swift.struct/playgrounddescription.md)

### Default Implementations

- [CustomDebugStringConvertible Implementations](createml/mlboostedtreeregressor/modelparameters-swift.struct/customdebugstringconvertible-implementations.md)
- [CustomPlaygroundDisplayConvertible Implementations](createml/mlboostedtreeregressor/modelparameters-swift.struct/customplaygrounddisplayconvertible-implementations.md)
- [CustomStringConvertible Implementations](createml/mlboostedtreeregressor/modelparameters-swift.struct/customstringconvertible-implementations.md)

## Relationships

### Conforms To

- [Copyable](swift/copyable.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomPlaygroundDisplayConvertible](swift/customplaygrounddisplayconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Escapable](swift/escapable.md)

## See Also

### Inspecting a boosted tree regressor

- [model](createml/mlboostedtreeregressor/model.md)
- [modelParameters](createml/mlboostedtreeregressor/modelparameters-swift.property.md)