CohereEmbed モデル

モデルに推論リクエストを行うEmbedには、使用するモデルのモデル ID InvokeModel が必要です。モデル ID を取得するには、「」を参照してくださいAmazon Bedrock IDs。

リクエストとレスポンス

コード例

この例は、CohereEmbed Englishモデルを呼び出す方法を示しています。

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
"""
Shows how to generate text embeddings using the Cohere Embed English model.
"""
import json
import logging
import boto3


from botocore.exceptions import ClientError

logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)


def generate_text_embeddings(model_id, body):
    """
    Generate text embedding by using the Cohere Embed model.
    Args:
        model_id (str): The model ID to use.
        body (str) : The reqest body to use.
    Returns:
        dict: The response from the model.
    """

    logger.info(
        "Generating text emdeddings with the Cohere Embed model %s", model_id)

    accept = '*/*'
    content_type = 'application/json'

    bedrock = boto3.client(service_name='bedrock-runtime')

    response = bedrock.invoke_model(
        body=body,
        modelId=model_id,
        accept=accept,
        contentType=content_type
    )

    logger.info("Successfully generated text with Cohere model %s", model_id)

    return response


def main():
    """
    Entrypoint for Cohere Embed example.
    """

    logging.basicConfig(level=logging.INFO,
                        format="%(levelname)s: %(message)s")

    model_id = 'cohere.embed-english-v3'
    text1 = "hello world"
    text2 = "this is a test"
    input_type = "search_document"
    embedding_types = ["int8", "float"]

    try:

        body = json.dumps({
            "texts": [
                text1,
                text2],
            "input_type": input_type,
            "embedding_types": embedding_types}
        )
        response = generate_text_embeddings(model_id=model_id,
                                            body=body)

        response_body = json.loads(response.get('body').read())

        print(f"ID: {response_body.get('id')}")
        print(f"Response type: {response_body.get('response_type')}")

        print("Embeddings")
        for i, embedding in enumerate(response_body.get('embeddings')):
            print(f"\tEmbedding {i}")
            print(*embedding)

        print("Texts")
        for i, text in enumerate(response_body.get('texts')):
            print(f"\tText {i}: {text}")

    except ClientError as err:
        message = err.response["Error"]["Message"]
        logger.error("A client error occurred: %s", message)
        print("A client error occured: " +
              format(message))
    else:
        print(
            f"Finished generating text embeddings with Cohere model {model_id}.")


if __name__ == "__main__":
    main()