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Definition

The class imbalance ratio test allows you to set a threshold on the ratio between the number of rows from the most common class and the least common class.

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Taxonomy

  • Category: Integrity.
  • Task types: Tabular classification, text classification.
  • Availability: .

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Why it matters

  • Class imbalance can significantly impact the performance of predictive models.
  • Measuring the class imbalance ratio helps select more appropriate evaluation metrics.
  • Awareness of the extent of class imbalance guides the choice of model and data preprocessing techniques.
  • While class imbalance is inherent to certain problems, it is important to continuously measure the class imbalance ratio to ensure that it does not go out of control.

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Test configuration examples

If you are writing a tests.json, here are a few valid configurations for the character length test:

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Character lengthColumn average