Which of the following classification metrics should be used to evaluate the model?

A health organization is developing a classification model to determine whether or not a patient currently has a specific type of infection. The organization’s leaders want to maximize the number of positive cases identified by the model.

Which of the following classification metrics should be used to evaluate the model?
A . RMSE
B . Precision
C . Area under the residual operating curve
D . Accuracy
E . Recall

Answer: E

Explanation:

When the goal is to maximize the identification of positive cases in a classification task, the metric of interest is Recall. Recall, also known as sensitivity, measures the proportion of actual positives that are correctly identified by the model (i.e., the true positive rate). It is crucial for scenarios where missing a positive case (false negative) has serious implications, such as in medical diagnostics. The other metrics like Precision, RMSE, and Accuracy serve different aspects of performance measurement and are not specifically focused on maximizing the detection of positive cases alone.

Reference: Classification Metrics in Machine Learning (Understanding Recall).