مقایسهٔ روش‌ها

	تخصصیت	امتیاز F1
حوزه	ارزیابی مدل	ارزیابی مدل
خانواده	MCDM	MCDM
سال پیدایش	20th century	1979
پدیدآور	Historical statistical foundations	C. J. van Rijsbergen
نوع	Evaluation metric	Evaluation metric
منبع بنیادین	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.
نام‌های دیگر	True Negative Rate, TNR	F-measure, Harmonic Mean
مرتبط	5	5
خلاصه	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.