---
title: "evaluation(on:tokenColumn:labelColumn:)"
framework: createml
role: symbol
role_heading: Instance Method
path: "createml/mlwordtagger/evaluation(on:tokencolumn:labelcolumn:)"
---

# evaluation(on:tokenColumn:labelColumn:)

Computes evaluation metrics.

## Declaration

```swift
func evaluation(on labeledTokens: DataFrame, tokenColumn: String, labelColumn: String) -> MLWordTaggerMetrics
```

## Parameters

- `labeledTokens`: An data frame containing tokens and labels.
- `tokenColumn`: The name of the token column in the data frame.
- `labelColumn`: The name of the label column in the data frame.

## Return Value

Return Value Word tagger metrics.

## See Also

### Evaluating a word tagger

- [evaluation(on:)](createml/mlwordtagger/evaluation(on:).md)
- [trainingMetrics](createml/mlwordtagger/trainingmetrics.md)
- [validationMetrics](createml/mlwordtagger/validationmetrics.md)
- [MLWordTaggerMetrics](createml/mlwordtaggermetrics.md)