DescribeModel 搭配 AWS SDK 使用 - AWS SDK 程式碼範例

文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 AWS SDK 範例。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

DescribeModel 搭配 AWS SDK 使用

下列程式碼範例示範如何使用 DescribeModel。

如需詳細資訊，請參閱檢視模型。

Python
SDK for Python (Boto3)
注意

GitHub 上提供更多範例。尋找完整範例，並了解如何在 AWS 程式碼範例儲存庫中設定和執行。

class Models:

    @staticmethod
    def describe_model(lookoutvision_client, project_name, model_version):
        """
        Shows the performance metrics for a trained model.

        :param lookoutvision_client: A Boto3 Amazon Lookout for Vision client.
        :param project_name: The name of the project that contains the desired model.
        :param model_version: The version of the model.
        """
        response = lookoutvision_client.describe_model(
            ProjectName=project_name, ModelVersion=model_version
        )
        model_description = response["ModelDescription"]
        print(f"\tModel version: {model_description['ModelVersion']}")
        print(f"\tARN: {model_description['ModelArn']}")
        if "Description" in model_description:
            print(f"\tDescription: {model_description['Description']}")
        print(f"\tStatus: {model_description['Status']}")
        print(f"\tMessage: {model_description['StatusMessage']}")
        print(f"\tCreated: {str(model_description['CreationTimestamp'])}")

        if model_description["Status"] in ("TRAINED", "HOSTED"):
            training_start = model_description["CreationTimestamp"]
            training_end = model_description["EvaluationEndTimestamp"]
            duration = training_end - training_start
            print(f"\tTraining duration: {duration}")

            print("\n\tPerformance metrics\n\t-------------------")
            print(f"\tRecall: {model_description['Performance']['Recall']}")
            print(f"\tPrecision: {model_description['Performance']['Precision']}")
            print(f"\tF1: {model_description['Performance']['F1Score']}")

            training_output_bucket = model_description["OutputConfig"]["S3Location"][
                "Bucket"
            ]
            prefix = model_description["OutputConfig"]["S3Location"]["Prefix"]
            print(f"\tTraining output: s3://{training_output_bucket}/{prefix}")

  • 如需 API 詳細資訊，請參閱 SDK AWS for Python (Boto3) API 參考中的 DescribeModel。