---
title: "evaluation(on:)"
framework: createml
role: symbol
role_heading: Instance Method
path: "createml/mlhandactionclassifier/evaluation(on:)"
---

# evaluation(on:)

Generates metrics describing the hand action classifier’s performance on labeled videos.

## Declaration

```swift
func evaluation(on annotatedVideos: MLHandActionClassifier.DataSource) throws -> MLClassifierMetrics
```

## Parameters

- `annotatedVideos`: An doc://com.apple.createml/documentation/CreateML/MLHandActionClassifier/DataSource instance.

## See Also

### Evaluating a hand action classifier

- [trainingMetrics](createml/mlhandactionclassifier/trainingmetrics.md)
- [validationMetrics](createml/mlhandactionclassifier/validationmetrics.md)