gemseo / mlearning / transform / dimension_reduction

dimension_reduction module

Dimension reduction as a generic transformer.

The DimensionReduction class implements the concept of dimension reduction.

See also

pca

class gemseo.mlearning.transform.dimension_reduction.dimension_reduction.DimensionReduction(name='DimensionReduction', n_components=None, **parameters)

Bases: gemseo.mlearning.transform.transformer.Transformer

Dimension reduction.

Parameters

• name (str) –

  A name for this transformer.

  By default it is set to DimensionReduction.

• n_components (int | None) –

  The number of components of the latent space. If None, use the maximum number allowed by the technique, typically min(n_samples, n_features).

  By default it is set to None.

• **parameters (bool | int | float | ndarray | str | None) – The parameters of the transformer.

Return type

None

compute_jacobian(data)

Compute Jacobian of transformer.transform().

Parameters

data (numpy.ndarray) – The data where the Jacobian is to be computed.

Returns

The Jacobian matrix.

Return type

NoReturn

compute_jacobian_inverse(data)

Compute Jacobian of the transformer.inverse_transform().

Parameters

data (numpy.ndarray) – The data where the Jacobian is to be computed.

Returns

The Jacobian matrix.

Return type

NoReturn

duplicate()

Duplicate the current object.

Returns

A deepcopy of the current instance.

Return type

gemseo.mlearning.transform.transformer.Transformer

fit(data, *args)

Fit the transformer to the data.

Parameters

• data (numpy.ndarray) – The data to be fitted.

• *args (Union[float, int, str]) –

Return type

NoReturn

fit_transform(data, *args)

Fit the transformer to the data and transform the data.

Parameters

• data (numpy.ndarray) – The data to be transformed.

• *args (Union[float, int, str]) –

Returns

The transformed data.

Return type

numpy.ndarray

inverse_transform(data)

Perform an inverse transform on the data.

Parameters

data (numpy.ndarray) – The data to be inverse transformed.

Returns

The inverse transformed data.

Return type

NoReturn

transform(data)

Transform the data.

Parameters

data (numpy.ndarray) – The data to be transformed.

Returns

The transformed data.

Return type

NoReturn

CROSSED = False

property n_components: int

The number of components.

name: str

The name of the transformer.

parameters: str

The parameters of the transformer.