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What does the classification threshold control, and who should set it?

  1. A The probability cut-off for a positive prediction, determined by the relative cost of each error type
  2. B The model architecture
  3. C The learning rate
  4. D The number of features
Answer

The probability cut-off for a positive prediction, determined by the relative cost of each error type

The default of 0.5 is arbitrary. Presenting the precision-recall trade-off lets the business choose the operating point.

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