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Table 1 Definitions of evaluation metrics

From: Predicting polypharmacy in half a million adults in the Iranian population: comparison of machine learning algorithms

Performance measures

Definitions

Accuracy

(TP + TN)/(TP + FP + FN + TN)

Precision

TP/(TP + FP)

Recall/ Sensitivity

TP/(TP + FN)

Specificity

TN/(TN + FP)

F1-score

(2 × TP)/(2 × TP + FP + FN)

  1. True positive (TP), true negative (TN), false positive (FP), false negative (FN)
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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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