replace_nullable_types#

Transformer to replace features with the new nullable dtypes with a dtype that is compatible in EvalML.

Module Contents#

Classes Summary#

ReplaceNullableTypes

Transformer to replace features with the new nullable dtypes with a dtype that is compatible in EvalML.

Contents#

class evalml.pipelines.components.transformers.preprocessing.replace_nullable_types.ReplaceNullableTypes(random_seed=0, **kwargs)[source]#

Transformer to replace features with the new nullable dtypes with a dtype that is compatible in EvalML.

Attributes

hyperparameter_ranges	None
modifies_features	True
modifies_target	{}
name	Replace Nullable Types Transformer
training_only	False

Methods

`clone`	Constructs a new component with the same parameters and random state.
`default_parameters`	Returns the default parameters for this component.
`describe`	Describe a component and its parameters.
`fit`	Fits component to data.
`fit_transform`	Substitutes non-nullable types for the new pandas nullable types in the data and target data.
`load`	Loads component at file path.
`needs_fitting`	Returns boolean determining if component needs fitting before calling predict, predict_proba, transform, or feature_importances.
`parameters`	Returns the parameters which were used to initialize the component.
`save`	Saves component at file path.
`transform`	Transforms data by replacing columns that contain nullable types with the appropriate replacement type.

clone(self)#

Constructs a new component with the same parameters and random state.

Returns: A new instance of this component with identical parameters and random state.

default_parameters(cls)#

Returns the default parameters for this component.

Our convention is that Component.default_parameters == Component().parameters.

Returns: Default parameters for this component.
Return type: dict

describe(self, print_name=False, return_dict=False)#

Describe a component and its parameters.

Parameters

print_name (bool, optional) – whether to print name of component
return_dict (bool, optional) – whether to return description as dictionary in the format {“name”: name, “parameters”: parameters}

Returns

Returns dictionary if return_dict is True, else None.

Return type

None or dict

fit(self, X, y=None)[source]#

Fits component to data.

Parameters

X (pd.DataFrame) – The input training data of shape [n_samples, n_features].
y (pd.Series, optional) – The target training data of length [n_samples].

Returns

self

fit_transform(self, X, y=None)[source]#

Substitutes non-nullable types for the new pandas nullable types in the data and target data.

Parameters

X (pd.DataFrame, optional) – Input features.
y (pd.Series) – Target data.

Returns

The input features and target data with the non-nullable types set.

Return type

tuple of pd.DataFrame, pd.Series

static load(file_path)#

Loads component at file path.

Parameters: file_path (str) – Location to load file.
Returns: ComponentBase object

needs_fitting(self)#

Returns boolean determining if component needs fitting before calling predict, predict_proba, transform, or feature_importances.

This can be overridden to False for components that do not need to be fit or whose fit methods do nothing.

Returns: True.

property parameters(self)#: Returns the parameters which were used to initialize the component.

save(self, file_path, pickle_protocol=cloudpickle.DEFAULT_PROTOCOL)#

Saves component at file path.

Parameters

file_path (str) – Location to save file.
pickle_protocol (int) – The pickle data stream format.

transform(self, X, y=None)[source]#

Transforms data by replacing columns that contain nullable types with the appropriate replacement type.

“float64” for nullable integers and “category” for nullable booleans.

Parameters

X (pd.DataFrame) – Data to transform
y (pd.Series, optional) – Target data to transform

Returns

Transformed X pd.Series: Transformed y

Return type

pd.DataFrame

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