rialto.maker package

Submodules

rialto.maker.containers module

class rialto.maker.containers.FeatureFunction(name: str, callable_object: Callable, value_type: ValueType = ValueType.nominal)

Bases: object

A container for feature generating object

contains a callable object, it’s name, parameters

get_feature_name() → str

Get feature name enhanced by parameters

Returns:

full feature name

get_type() → str

Get feature value type

Returns:

value type

metadata() → FeatureMetadata

Return functions metadata

Returns:

metadata dict

class rialto.maker.containers.FeatureHolder

Bases: list

A container for FeatureFunctions used in the feature building process

Basically just a plain list with unique type name

get_metadata() → List[FeatureMetadata]

Concats metadata from all functions

Returns:

List of metadata

rialto.maker.feature_maker module

rialto.maker.utils module

rialto.maker.utils.feature_name(name: str, parameters: Dict) → str

Join feature function name with parameters to create a feature name

Parameters:

• name – string name of feature

• parameters – unordered dict of parameters and values

Returns:

feature name

rialto.maker.wrappers module

rialto.maker.wrappers.depends(feature_functions: Callable | FeatureHolder, dependency: str)

Specify dependency features

The purpose of this wrapper is to define inter-feature dependency and order the execution accordingly :param feature_functions: FeatureHolder or pure function :param dependency: str name of required function :return: FeatureHolder

rialto.maker.wrappers.desc(feature_functions: Callable | FeatureHolder, desc: str)

Wrap feature with string description, used in metadata

Parameters:

• feature_functions – FeatureHolder or pure function

• type – FeatureType enum (numerical, ordinal, nominal)

Returns:

FeatureHolder

rialto.maker.wrappers.feature(feature_functions: Callable | FeatureHolder, feature_type: ValueType)

Wrap a feature definitions. Use as the outermost decorator!!!

The purpose of this wrapper is to wrap function that have no other decorator inside FeatureHolder and define feature type :param feature_functions: FeatureHolder or pure function :param feature_type: FeatureType enum (numerical, ordinal, nominal) :return: FeatureHolder

rialto.maker.wrappers.param(feature_functions: Callable | FeatureHolder, parameter_name: str, values: List)

Wrap a feature function with custom parameter, can be chained

Creates a cartesian product of all previous parameters with new ones :param feature_functions: FeatureHolder or pure function :param parameter_name: string name of the parameter :param values: a list of parameter values :return: FeatureHolder

Module contents