![]() ![]() Sensitivity, recall, hit rate, or true positive rate (TPR) T P R = T P P = T P T P + F N = 1 − F N R. True positive (TP) A test result that correctly indicates the presence of a condition or characteristic true negative (TN) A test result that correctly indicates the absence of a condition or characteristic false positive (FP), Type I error A test result which wrongly indicates that a particular condition or attribute is present false negative (FN), Type II error A test result which wrongly indicates that a particular condition or attribute is absent Table layout for visualizing performance also called an error matrix Terminology and derivationsįrom a confusion matrix condition positive (P) the number of real positive cases in the data condition negative (N) the number of real negative cases in the data ![]()
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