Why is harmonic mean used to calculate f1 score and not the arithmetic mean?
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Answer / Pravesh Kaushik
The harmonic mean is used to calculate the F1 score because it provides a more accurate measure of average performance when dealing with ratios, such as precision and recall. The harmonic mean penalizes larger differences between values more than the arithmetic mean, which makes it a better choice for balancing precision and recall in the F1 score calculation.
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