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Figure 5
(a) The ROC curve of the RF model, illustrating sensitivity and specificity values across varying thresholds. The red dot marks the optimal cut-off point, identified as the highest specificity value corresponding to a specificity of at least 80%, for the correct classification of a significant portion of Class 1 structures. The AUC is reported as a measure of the overall performance of the model. (b) Feature importance, ordered by the descending mean decrease Gini (Kaufman & Rousseeuw, 1990View full citation) resulting from the RF model.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 58| Part 6| December 2025| Pages 1859-1869
https://doi.org/10.1107/S1600576725008271
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