module change_detection.evaluation.measures.detection_delay

Detection Delay Measure.

This function returns the average delay in number of observations between the beginning of a known concept drift and the first detected concept drift.

Copyright (C) 2022 Johannes Haug.

function detection_delay

detection_delay(
    evaluator: float.change_detection.evaluation.change_detection_evaluator.ChangeDetectionEvaluator,
    drifts: list,
    n_delay: Optional[int] = None
) → float

Calculates the average delay before detecting a concept drift.

Args:

  • evaluator: The ChangeDetectionEvaluator object.
  • drifts: List of time steps corresponding to detected concept drifts.
  • n_delay: This attribute is only included for consistency purposes. It is not relevant for this measure.

Returns:

  • float: The average delay in number of observations between a known drift and the first detected drift.

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