Ranker

The Ranker tag is used to rank the results from models. This tag uses the “prediction” field from a labeling task instead of the “data” field to display content for labeling on the interface. Carefully structure your labeling tasks to work with this tag. See import pre-annotated data.

Use with the following data types: text.

The Ranker tag renders a given list of strings and allows you to drag and reorder them.
To see this tag in action:

1. Save the example JSON below as a file called example_ranker_tag.json.
2. Upload it as a task on the Label Studio UI.
3. Set up a project with the given labeling configuration.

Parameters

Example

Labeling configuration for ranking predicted text output from a model

<View>
  <Text name="txt-1" value="$text"></Text>
  <Ranker name="ranker-1" toName="txt-1" ranked="true" sortedHighlightColor="red"></Ranker>
</View>

Example

Example JSON task to use to see the Ranker tag in action

[{
  "data": {
    "text": "Some text for the ranker tag"
  },
  "predictions": [{
    "model_version": "1564027355",
    "result": [{
      "from_name": "ranker-1",
      "to_name": "ranker-1",
      "type": "ranker",
      "value": {
        "items": ["abc", "def", "ghk", "more more more", "really long text"],
        "weights": [1.00, 0.78, 0.75, 0.74, 0.74],
        "selected": [false, false, false, false, false]
      }
    }],
    "score": 1.0
  }]
}]

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