قارن الطرق

	النوعية	مقياس F1 (F1-Score)
المجال	تقييم النماذج	تقييم النماذج
العائلة	MCDM	MCDM
سنة النشأة	20th century	1979
صاحب الطريقة	Historical statistical foundations	C. J. van Rijsbergen
النوع	Evaluation metric	Evaluation metric
المصدر التأسيسي	Fawcett, T. (2006). An introduction to ROC analysis. Pattern Recognition Letters, 27(8), 861-874.	van Rijsbergen, C. J. (1979). Information Retrieval (2nd ed.). Butterworth-Heinemann.
الأسماء البديلة	True Negative Rate, TNR	F-measure, Harmonic Mean
ذات صلة	5	5
الملخص	Specificity measures the proportion of actual negative cases that were correctly identified as negative by the classifier. It answers the question: 'Of all the cases that were truly negative, how many did we correctly reject?' Specificity is complementary to recall and is essential when false positives are costly.	The F1-score is the harmonic mean of precision and recall, providing a single metric that balances both concerns. It was introduced by van Rijsbergen in information retrieval and has become a standard metric for evaluating classification models where both precision and recall are important.