Table of Contents

• whylogs.core.metrics.confusion_matrix
  • ConfusionMatrix
    • add
    • merge
    • to_protobuf

ConfusionMatrix Objects

class ConfusionMatrix()

Confusion Matrix Class to hold labels and matrix data.

Attributes:

• labels - list of labels in a sorted order
• prediction_field - name of the prediction field
• target_field - name of the target field
• score_field - name of the score field
• confusion_matrix nd.array - Confusion Matrix kept as matrix of NumberTrackers
• labels List[str] - list of labels for the confusion_matrix axes

add

 | add(predictions: List[Union[str, int, bool]], targets: List[Union[str, int, bool]], scores: List[float])

Function adds predictions and targets to confusion matrix with scores.

Arguments:

predictions (List[Union[str, int, bool]]): targets (List[Union[str, int, bool]]): scores (List[float]):

Raises:

• NotImplementedError - in case targets do not fall into binary or multiclass suport
• ValueError - incase missing validation or predictions

merge

 | merge(other_cm)

Merge two seperate confusion matrix which may or may not overlap in labels.

Arguments:

• other_cm Optional[ConfusionMatrix] - confusion_matrix to merge with self

Returns:

• ConfusionMatrix - merged confusion_matrix

to_protobuf

 | to_protobuf()

Convert to protobuf

Returns:

• TYPE - Description