---
title: minimumLossReduction
framework: createmlcomponents
role: symbol
role_heading: Instance Property
path: createmlcomponents/boostedtreeconfiguration/minimumlossreduction
---

# minimumLossReduction

Minimum loss reduction required to further split a node during the tree learning phase.

## Declaration

```swift
var minimumLossReduction: Double
```

## Discussion

Discussion Larger values can help prevent overfitting by avoiding splits that do not sufficiently reduce the loss function. Defaults to 0.

## See Also

### Inspecting the configuration

- [columnSubsample](createmlcomponents/boostedtreeconfiguration/columnsubsample.md)
- [earlyStoppingIterationCount](createmlcomponents/boostedtreeconfiguration/earlystoppingiterationcount.md)
- [learningRate](createmlcomponents/boostedtreeconfiguration/learningrate.md)
- [maximumDepth](createmlcomponents/boostedtreeconfiguration/maximumdepth.md)
- [maximumIterations](createmlcomponents/boostedtreeconfiguration/maximumiterations.md)
- [minimumChildWeight](createmlcomponents/boostedtreeconfiguration/minimumchildweight.md)
- [parallelTreeCount](createmlcomponents/boostedtreeconfiguration/paralleltreecount.md)
- [randomSeed](createmlcomponents/boostedtreeconfiguration/randomseed.md)
- [rowSubsample](createmlcomponents/boostedtreeconfiguration/rowsubsample.md)
- [stepSize](createmlcomponents/boostedtreeconfiguration/stepsize.md)