---
title: MLBoostedTreeRegressor
framework: createml
role: symbol
role_heading: Structure
path: createml/mlboostedtreeregressor
---

# MLBoostedTreeRegressor

A regressor based on a collection of decision trees combined with gradient boosting.

## Declaration

```swift
struct MLBoostedTreeRegressor
```

## Topics

### Training a boosted tree regressor asynchronously

- [train(trainingData:targetColumn:featureColumns:parameters:sessionParameters:)](createml/mlboostedtreeregressor/train(trainingdata:targetcolumn:featurecolumns:parameters:sessionparameters:).md)
- [makeTrainingSession(trainingData:targetColumn:featureColumns:parameters:sessionParameters:)](createml/mlboostedtreeregressor/maketrainingsession(trainingdata:targetcolumn:featurecolumns:parameters:sessionparameters:).md)
- [resume(_:)](createml/mlboostedtreeregressor/resume(_:).md)
- [restoreTrainingSession(sessionParameters:)](createml/mlboostedtreeregressor/restoretrainingsession(sessionparameters:).md)

### Creating a boosted tree regressor from a checkpoint

- [init(checkpoint:)](createml/mlboostedtreeregressor/init(checkpoint:).md)

### Training a boosted tree regressor synchronously

- [init(trainingData:targetColumn:featureColumns:parameters:)](createml/mlboostedtreeregressor/init(trainingdata:targetcolumn:featurecolumns:parameters:).md)
- [targetColumn](createml/mlboostedtreeregressor/targetcolumn.md)
- [featureColumns](createml/mlboostedtreeregressor/featurecolumns.md)

### Evaluating a boosted tree regressor

- [evaluation(on:)](createml/mlboostedtreeregressor/evaluation(on:).md)
- [trainingMetrics](createml/mlboostedtreeregressor/trainingmetrics.md)
- [validationMetrics](createml/mlboostedtreeregressor/validationmetrics.md)

### Testing a boosted tree regressor

- [predictions(from:)](createml/mlboostedtreeregressor/predictions(from:).md)

### Saving a boosted tree regressor

- [write(to:metadata:)](createml/mlboostedtreeregressor/write(to:metadata:).md)
- [write(toFile:metadata:)](createml/mlboostedtreeregressor/write(tofile:metadata:).md)

### Inspecting a boosted tree regressor

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

### Describing a boosted tree regressor

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

### Default Implementations

- [CustomDebugStringConvertible Implementations](createml/mlboostedtreeregressor/customdebugstringconvertible-implementations.md)
- [CustomPlaygroundDisplayConvertible Implementations](createml/mlboostedtreeregressor/customplaygrounddisplayconvertible-implementations.md)
- [CustomStringConvertible Implementations](createml/mlboostedtreeregressor/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)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Supporting regressor types

- [MLLinearRegressor](createml/mllinearregressor.md)
- [MLDecisionTreeRegressor](createml/mldecisiontreeregressor.md)
- [MLRandomForestRegressor](createml/mlrandomforestregressor.md)