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Imbalanced Classification Metrics

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Your question is Imbalanced Classification Metrics. Take a moment with it on the right.

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Problem

Explain the difference between accuracy, precision, recall, and F1 score in an imbalanced classification problem.

Define each metric, describe how it is calculated from the confusion matrix, and explain why accuracy may be misleading when one class is much more common than the other. Clarify when precision, recall, or F1 score should be prioritized.