Σύγκριση μεθόδων

	Στατιστική J του Youden	Βαθμολογία F1
Πεδίο	Αξιολόγηση Μοντέλων	Αξιολόγηση Μοντέλων
Οικογένεια	MCDM	MCDM
Έτος προέλευσης	1950	1979
Δημιουργός	W. J. Youden	C. J. van Rijsbergen
Τύπος	Evaluation metric	Evaluation metric
Θεμελιώδης πηγή	Youden, W. J. (1950). Index for rating diagnostic tests. Cancer, 3(1), 32-35.	van Rijsbergen, C. J. (1979). Information Retrieval (2nd ed.). Butterworth-Heinemann.
Εναλλακτικές ονομασίες	Youden Index, Sensitivity + Specificity - 1	F-measure, Harmonic Mean
Συναφείς	3	5
Σύνοψη	Youdens J statistic, also called the Youden index, measures the maximum difference between the true positive rate and false positive rate across different classification thresholds. It is useful for selecting optimal cutoff points in diagnostic testing.	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.