使用自定义设置对 Gemini 进行微调，以满足高级使用场景

使用 Vertex AI 监督式微调功能和高级参数来调优生成式 AI 模型。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

代码示例

Python

在尝试此示例之前，请按照《Vertex AI 快速入门：使用客户端库》中的 Python 设置说明执行操作。 如需了解详情，请参阅 Vertex AI Python API 参考文档。

如需向 Vertex AI 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为本地开发环境设置身份验证。 


import time

import vertexai
from vertexai.tuning import sft

# TODO(developer): Update and un-comment below line
# PROJECT_ID = "your-project-id"
vertexai.init(project=PROJECT_ID, location="us-central1")

# Initialize Vertex AI with your service account for BYOSA (Bring Your Own Service Account).
# Uncomment the following and replace "your-service-account"
# vertexai.init(service_account="your-service-account")

# Initialize Vertex AI with your CMEK (Customer-Managed Encryption Key).
# Un-comment the following line and replace "your-kms-key"
# vertexai.init(encryption_spec_key_name="your-kms-key")

sft_tuning_job = sft.train(
    source_model="gemini-2.0-flash-001",
    # 1.5 and 2.0 models use the same JSONL format
    train_dataset="gs://cloud-samples-data/ai-platform/generative_ai/gemini-1_5/text/sft_train_data.jsonl",
    # The following parameters are optional
    validation_dataset="gs://cloud-samples-data/ai-platform/generative_ai/gemini-1_5/text/sft_validation_data.jsonl",
    tuned_model_display_name="tuned_gemini_2_0_flash",
    # Advanced use only below. It is recommended to use auto-selection and leave them unset
    # epochs=4,
    # adapter_size=4,
    # learning_rate_multiplier=1.0,
)

# Polling for job completion
while not sft_tuning_job.has_ended:
    time.sleep(60)
    sft_tuning_job.refresh()

print(sft_tuning_job.tuned_model_name)
print(sft_tuning_job.tuned_model_endpoint_name)
print(sft_tuning_job.experiment)
# Example response:
# projects/123456789012/locations/us-central1/models/1234567890@1
# projects/123456789012/locations/us-central1/endpoints/123456789012345
# <google.cloud.aiplatform.metadata.experiment_resources.Experiment object at 0x7b5b4ae07af0>

后续步骤

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