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In this article:

  • gRPC request
  • FewShotTextClassificationRequest
  • ClassificationSample
  • FewShotTextClassificationResponse
  • ClassificationLabel
  1. API references
  2. Text Classification API
  3. gRPC
  4. TextClassification
  5. FewShotClassify

Foundation Models Text Classification API, gRPC: TextClassificationService.FewShotClassify

Written by
Yandex Cloud
Updated at April 24, 2025
  • gRPC request
  • FewShotTextClassificationRequest
  • ClassificationSample
  • FewShotTextClassificationResponse
  • ClassificationLabel

RPC method for binary and multi-class classification.

You can provide up to 20 classes for few-shot text classification
with optional examples.

gRPC requestgRPC request

rpc FewShotClassify (FewShotTextClassificationRequest) returns (FewShotTextClassificationResponse)

FewShotTextClassificationRequestFewShotTextClassificationRequest

{
  "model_uri": "string",
  "task_description": "string",
  "labels": [
    "string"
  ],
  "text": "string",
  "samples": [
    {
      "text": "string",
      "label": "string"
    }
  ]
}

Request for the service to classify text.
For examples of usage, see step-by-step guides.

Field

Description

model_uri

string

The URI of the classifier model.

task_description

string

Text description of the classification task.

labels[]

string

List of available labels for the classification result.
Give meaningful names to label classes: this is essential for correct classification results.
For example, use chemistry and physics rather than chm and phs for class names.

text

string

Text for classification.

samples[]

ClassificationSample

Optional set of text samples with expected labels that may be used as an additional hint for the classifier.

ClassificationSampleClassificationSample

Description of a sample for the classification task.

Field

Description

text

string

Text sample.

label

string

Expected label for a given text.

FewShotTextClassificationResponseFewShotTextClassificationResponse

{
  "predictions": [
    {
      "label": "string",
      "confidence": "double"
    }
  ],
  "model_version": "string",
  "input_tokens": "int64"
}

Response containing classifier predictions.

Field

Description

predictions[]

ClassificationLabel

The classification results with the `confidence`` values
for the probability of classifying the request text into each class.

model_version

string

The model version changes with each new releases.

input_tokens

int64

Number of input tokens

ClassificationLabelClassificationLabel

A pair of text labels and their corresponding confidence values.

Field

Description

label

string

A class name label.

confidence

double

The probability of classifying text into a specific class.

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