What is the False Discovery Rate?

Given a positive prediction, the False Discovery Rate (FDR) is the performance metric that tells you the probability that the true value is negative.

• It is closely related to the False Omission Rate, which is completely analogous.
• The complement of the False Discovery Rate is the Positive Predictive Value. Consequently, they add up to 1.
• The False Discovery Rate answers the question: “If the prediction is positive, what share of my prediction is truly negative?”
• The False Discovery Rate is calculated as follows: