# add(_:) Updates the metrics with more pairs of classifications and ground truth labels. ``` mutating func add(_ pairs: some Sequence<(classification: ClassificationDistribution, labels: Set)>) ``` ## Parameters `pairs` A sequence of classifications and true label pairs. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)