# Search hyperparameters

Model / tune

A variant of [Tune a model](https://meridian.online/operations/tune-a-model).

Train a model repeatedly over a space of parameter values and keep the best-scoring setting.

Page: <https://meridian.online/operations/tune-a-model/search-hyperparameters>

## Status

Not built yet.

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

## What other tools call it

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

- KNIME Analytics Platform: [`KNIME Optimization extension (extension)`](https://api.hub.knime.com/extensions/org.knime.features.optimization) (read 2026-09-27)
- mlpack: [`Hyperparameter tuning`](https://www.mlpack.org/doc/user/hpt.html) (read 2026-09-27)
- RapidMiner Studio: [`Optimize Parameters (Evolutionary)`](https://docs.rapidminer.com/latest/studio/operators/modeling/optimization/parameters/optimize_parameters_evolutionary.html) (read 2026-09-27)
- RapidMiner Studio: [`Optimize Parameters (Grid)`](https://docs.rapidminer.com/latest/studio/operators/modeling/optimization/parameters/optimize_parameters_grid.html) (read 2026-09-27)
- RapidMiner Studio: [`Optimize Parameters (Quadratic)`](https://docs.rapidminer.com/latest/studio/operators/modeling/optimization/parameters/optimize_parameters_quadratic.html) (read 2026-09-27)
- Yggdrasil Decision Forests: [`HYPERPARAMETER_OPTIMIZER`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/learner/hyperparameters_optimizer/hyperparameters_optimizer.h) (read 2026-09-27)
- Yggdrasil Decision Forests: [`OptimizerLogs`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/port/python/ydf/model/optimizer_logs.py) (read 2026-09-27)
- Yggdrasil Decision Forests: [`RandomSearchTuner`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/port/python/ydf/learner/tuner.py) (read 2026-09-27)
- Yggdrasil Decision Forests: [`VizierTuner`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/port/python/ydf/learner/tuner.py) (read 2026-09-27)
- Yggdrasil Decision Forests: [`choice`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/port/python/ydf/learner/tuner.py) (read 2026-09-27)
- Yggdrasil Decision Forests: [`hyperparameter_optimizer_logs`](https://github.com/google/yggdrasil-decision-forests/blob/0a54b57c95ff0cf42ecf0310ace0513a4f32cb65/yggdrasil_decision_forests/port/python/ydf/model/generic_model.py) (read 2026-09-27)