autoemulate.core.tuner

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autoemulate.core.tuner#

class Tuner(x, y, n_iter=10, device=None, random_seed=None)[source]#

Bases: ConversionMixin, TorchDeviceMixin

Run randomised hyperparameter search for a given model.

Parameters:

  • x (InputLike) – Input features.

  • y (OutputLike or None) – Target values (not needed if x is a Dataset).

  • n_iter (int) – Number of parameter settings to randomly sample and test.

  • device (DeviceLike | None) – The device to use for model training and evaluation. If None, uses the default device (usually CPU or GPU).

  • random_seed (int | None) – Random seed for reproducibility. If None, no seed is set.

run(model_class, x_transforms=None, y_transforms=None, transformed_emulator_params=None, n_splits=5, seed=None, shuffle=True)[source]#

Run randomised hyperparameter search for a given model.

Parameters:

  • model_class (type[Emulator]) – A concrete Emulator subclass.

  • x_transforms_list (list[list[AutoEmulateTransform]] | None) – An optional list of sequences of transforms to apply to the input data. Defaults to None, in which case the data is standardized.

  • y_transforms_list (list[list[AutoEmulateTransform]] | None) – An optional list of sequences of transforms to apply to the output data. Defaults to None, in which case the data is standardized.

  • transformed_emulator_params (None | TransformedEmulatorParams) – Parameters for the transformed emulator. Defaults to None.

  • n_splits (int) – Number of cross validation folds to split data into. Defaults to 5.

  • seed (int | None) – Random seed to use in cross validation. If None, no seed is set.

  • shuffle (bool) – Whether to shuffle data before splitting into cross validation folds. Defaults to True.

Returns:

The validation scores and parameter values used in each search iteration.

Return type:

Tuple[list[float], list[ModelParams]]

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