Research Article

The Discriminants of Long and Short Duration Failures in Fulfillment Sortation Equipment: A Machine Learning Approach

Table 1

Common classification model evaluation metrics in the equipment reliability context.

MetricFormulaDescription

Accuracy (acc)The ratio of correct predictions by all predictions made
Precision (p)The ratio of correct positive predictions by all positively predicted classes
Recall (r)The ratio of correct positive predictions by all true positive classes
f1-score (f1)The harmonic mean between precision and recall
Fall out rate (fpr)The probability of a false alarm
Error rate (err)The ratio of incorrect predictions by all predictions made