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354.
Harmonic Mean in F1 Score
easy
Why is the harmonic mean used in the F1 score rather than the arithmetic mean?
A
The harmonic mean penalizes large gaps between precision and recall, rewarding balanced performance
B
The harmonic mean normalizes precision and recall to the same scale before combining them
C
The harmonic mean is always lower than the arithmetic mean, making F1 a more conservative metric
D
The harmonic mean is computationally faster to compute than the arithmetic mean for large datasets
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