# Train a random forest

Model / supervised

A variant of [Train a tree model](https://meridian.online/operations/train-a-tree-model).

Train many trees on random samples of rows and columns and average their votes.

Page: <https://meridian.online/operations/train-a-tree-model/train-a-random-forest>

## Status

Not built yet.

arcform does not do this yet. [Its place on the roadmap](https://meridian.online/roadmap#train-a-tree-model)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3).

- Alteryx Designer: [`Forest Model`](https://help.alteryx.com/current/en/designer/tools/predictive/forest-model-tool.html) (read 2026-09-27)
- KNIME Analytics Platform: [`Random Forest Learner`](https://api.hub.knime.com/nodes/*2hhbyPN8yXaMD1YU?details=full) (read 2026-09-27)
- KNIME Analytics Platform: [`Random Forest Learner (Regression)`](https://api.hub.knime.com/nodes/*Ea5mI3GFXonzfQTM?details=full) (read 2026-09-27)
- KNIME Analytics Platform: [`Tree Ensemble Learner`](https://api.hub.knime.com/nodes/*hS9r1NhUrO5Ds6UJ?details=full) (read 2026-09-27)
- KNIME Analytics Platform: [`Tree Ensemble Learner (Regression)`](https://api.hub.knime.com/nodes/*_emYVD9WVlCWiPfz?details=full) (read 2026-09-27)
- mlpack: [`RandomForest`](https://www.mlpack.org/doc/user/modeling.html) (read 2026-09-27)
- mlpack: [`mlpack_random_forest_train`](https://duckdb.org/community_extensions/extensions/mlpack) (read 2026-09-27)
- RapidMiner Studio: [`Random Forest`](https://docs.rapidminer.com/latest/studio/operators/modeling/predictive/trees/parallel_random_forest.html) (read 2026-09-27)
- Talend: [`tMatchModel`](https://help.qlik.com/talend/en-US/components/8.0/matching-with-machine-learning/matching-with-machine-learning-component) (read 2026-09-27)
- Talend: [`tRandomForestModel`](https://help.qlik.com/talend/en-US/components/8.0/machine-learning/machine-learning-component) (read 2026-09-27)
- Yggdrasil Decision Forests: [`RANDOM_FOREST`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/learner/random_forest/random_forest.h) (read 2026-09-27)