ClassifierPipelineElement

class capymoa.stream.preprocessing.ClassifierPipelineElement

Bases: PipelineElement

Pipeline element that wraps around a classifier

__init__(learner: Classifier)

Initializes the pipeline element with a classifier.

Parameters

learner: Classifier

The classifier associated with this pipeline element.

get_input_schema() → Schema | None

Return the schema of instances this element expects to receive.

Defaults to get_schema(), which is correct for every element that does not alter the attribute set.

get_schema() → Schema | None

Return the schema the wrapped classifier expects; learners do not alter it.

pass_forward(

instance: Instance,

) → Instance

Trains the learner on the provided instance; then returns the instance.

Parameters

instance: Instance

An instance to train the learner

Returns

Instance

The instance that was provided to the function

pass_forward_predict(

instance: Instance,

prediction: Any = None,

) → tuple[Instance, Any]

Trains the learner on the provided instance; then returns the instance.

Parameters

instance: Instance

An instance to train the learner

prediction: Any

Most likely None, but could be anything in principle

Returns

Tuple[Instance, Any]

The transformed instance and the prediction of the classifier