Evaluate a trained model Generally available; Added in 8.3.0

POST /_ml/trained_models/{model_id}/_infer
Api key auth Basic auth Bearer auth

Path parameters

  • model_id string Required

    The unique identifier of the trained model.

Query parameters

  • timeout string

    Controls the amount of time to wait for inference results.

    Values are -1 or 0.

application/json

Body Required

  • docs array[object] Required

    An array of objects to pass to the model for inference. The objects should contain a fields matching your configured trained model input. Typically, for NLP models, the field name is text_field. Currently, for NLP models, only a single value is allowed.

    Hide docs attribute Show docs attribute object
    • * object Additional properties
  • inference_config object
    Hide inference_config attributes Show inference_config attributes object
    • regression object
      Hide regression attributes Show regression attributes object
    • classification object
      Hide classification attributes Show classification attributes object
      • num_top_classes number

        Specifies the number of top class predictions to return. Defaults to 0.

      • num_top_feature_importance_values number

        Specifies the maximum number of feature importance values per document.

      • prediction_field_type string

        Specifies the type of the predicted field to write. Acceptable values are: string, number, boolean. When boolean is provided 1.0 is transformed to true and 0.0 to false.

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

      • top_classes_results_field string

        Specifies the field to which the top classes are written. Defaults to top_classes.

    • text_classification object
      Hide text_classification attributes Show text_classification attributes object
      • num_top_classes number

        Specifies the number of top class predictions to return. Defaults to 0.

      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

      • classification_labels array[string]

        Classification labels to apply other than the stored labels. Must have the same deminsions as the default configured labels

    • zero_shot_classification object
      Hide zero_shot_classification attributes Show zero_shot_classification attributes object
      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

      • multi_label boolean

        Update the configured multi label option. Indicates if more than one true label exists. Defaults to the configured value.

      • labels array[string] Required

        The labels to predict.

    • fill_mask object
      Hide fill_mask attributes Show fill_mask attributes object
      • num_top_classes number

        Specifies the number of top class predictions to return. Defaults to 0.

      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

    • ner object
      Hide ner attributes Show ner attributes object
      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

    • pass_through object
      Hide pass_through attributes Show pass_through attributes object
      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

    • text_embedding object
      Hide text_embedding attributes Show text_embedding attributes object
      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

    • text_expansion object
      Hide text_expansion attributes Show text_expansion attributes object
      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

    • question_answering object
      Hide question_answering attributes Show question_answering attributes object
      • question string Required

        The question to answer given the inference context

      • num_top_classes number

        Specifies the number of top class predictions to return. Defaults to 0.

      • tokenization object
        Hide tokenization attributes Show tokenization attributes object
        • truncate string

          Values are first, second, or none.

        • span number

          Span options to apply

      • results_field string

        The field that is added to incoming documents to contain the inference prediction. Defaults to predicted_value.

      • max_answer_length number

        The maximum answer length to consider for extraction

Responses

POST /_ml/trained_models/{model_id}/_infer 
POST _ml/trained_models/lang_ident_model_1/_infer
{
  "docs":[{"text": "The fool doth think he is wise, but the wise man knows himself to be a fool."}]
}
resp = client.ml.infer_trained_model(
    model_id="lang_ident_model_1",
    docs=[
        {
            "text": "The fool doth think he is wise, but the wise man knows himself to be a fool."
        }
    ],
)
const response = await client.ml.inferTrainedModel({
  model_id: "lang_ident_model_1",
  docs: [
    {
      text: "The fool doth think he is wise, but the wise man knows himself to be a fool.",
    },
  ],
});
response = client.ml.infer_trained_model(
  model_id: "lang_ident_model_1",
  body: {
    "docs": [
      {
        "text": "The fool doth think he is wise, but the wise man knows himself to be a fool."
      }
    ]
  }
)
$resp = $client->ml()->inferTrainedModel([
    "model_id" => "lang_ident_model_1",
    "body" => [
        "docs" => array(
            [
                "text" => "The fool doth think he is wise, but the wise man knows himself to be a fool.",
            ],
        ),
    ],
]);
curl -X POST -H "Authorization: ApiKey $ELASTIC_API_KEY" -H "Content-Type: application/json" -d '{"docs":[{"text":"The fool doth think he is wise, but the wise man knows himself to be a fool."}]}' "$ELASTICSEARCH_URL/_ml/trained_models/lang_ident_model_1/_infer"
Request example
An example body for a `POST _ml/trained_models/lang_ident_model_1/_infer` request. 
{
  "docs":[{"text": "The fool doth think he is wise, but the wise man knows himself to be a fool."}]
}