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| Youdens J-statistik× | F1-score× | |
|---|---|---|
| Fagområde | Modelevaluering | Modelevaluering |
| Familie | MCDM | MCDM |
| Oprindelsesår≠ | 1950 | 1979 |
| Ophavsperson≠ | W. J. Youden | C. J. van Rijsbergen |
| Type | Evaluation metric | Evaluation metric |
| Oprindelig kilde≠ | Youden, W. J. (1950). Index for rating diagnostic tests. Cancer, 3(1), 32-35. DOI ↗ | van Rijsbergen, C. J. (1979). Information Retrieval (2nd ed.). Butterworth-Heinemann. link ↗ |
| Aliasser | Youden Index, Sensitivity + Specificity - 1 | F-measure, Harmonic Mean |
| Relaterede≠ | 3 | 5 |
| Resumé≠ | 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. |
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