A monitoring threshold triggers PSI > 0.20 as an alert. What type of drift does PSI specifically measure?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Here's the deal — c is correct because Population Stability Index compares score or feature distributions between reference and monitoring periods to detect covariate/data drift — changes in P(X). A (concept drift) requires monitoring P(Y|X) with ground truth labels.
Full explanation below image
Full Explanation
C is correct because Population Stability Index compares score or feature distributions between reference and monitoring periods to detect covariate/data drift — changes in P(X). A (concept drift) requires monitoring P(Y|X) with ground truth labels. B (label drift) monitors P(Y). D (model drift) is not a standard drift category.