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	Viktad F1	Mikro-medelvärdesbildad F1
Ämnesområde	Modellutvärdering	Modellutvärdering
Familj	MCDM	MCDM
Ursprungsår	2000s	2000s
Upphovsperson	Multi-class evaluation community	Multi-class evaluation community
Typ	Evaluation metric	Evaluation metric
Ursprungskälla	Powers, D. M. (2011). Evaluation: From Precision, Recall and F-Measure to ROC, Informedness, Markedness and Correlation. Journal of Machine Learning Technologies, 2(1), 37-63.	Powers, D. M. (2011). Evaluation: From Precision, Recall and F-Measure to ROC, Informedness, Markedness and Correlation. Journal of Machine Learning Technologies, 2(1), 37-63.
Alias	Support-weighted F1	Micro F1, Frequency-weighted average F1
Närliggande	3	4
Sammanfattning	Weighted F1 computes the F1-score for each class and then takes a weighted average, where weights are proportional to the number of samples in each class (support). It provides a middle ground between macro and micro-averaging.	Micro-averaged F1 computes the F1-score by aggregating true positives, false positives, and false negatives across all classes, then calculating a single metric. It is equivalent to accuracy in multi-class classification and is useful when class distributions reflect their natural importance.