---
title: "evaluation(on:tokenColumn:labelColumn:)"
framework: createml
role: symbol
role_heading: Instance Method
path: "createml/mlwordtagger/evaluation(on:tokencolumn:labelcolumn:)-31x1l"
---

# evaluation(on:tokenColumn:labelColumn:)

Computes evaluation metrics.

## Declaration

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

## Parameters

- `labeledTokens`: A table 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.

## Mentioned in

Creating a word tagger model

## Return Value

Return Value Word tagger metrics.