Probability calibration matters when:

Question

Accepted Answer

Downstream decisions use predicted probabilities with cost-sensitive thresholds — If you threshold probabilities under costs, calibrate — raw scores may be mis-scaled.

Answer

You only need argmax labels and never thresholds/costs

Answer

Metrics ignore probabilities entirely

Answer

Using pure clustering without labels

Probability calibration matters when:

Short Explanation and Infographic

Full Explanation