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latestOpenAPI 3.0.0Apache 2.0 License2026-07-1443187284.6 KB

Creates a new Neptune ML model training job. See Model training using the modeltraining command.

When invoking this operation in a Neptune cluster that has IAM authentication enabled, the IAM user or role making the request must have a policy attached that allows the neptune-db:StartMLModelTrainingJob IAM action in that cluster.

post/ml/modeltraining

Request body

idstring

A unique identifier for the new job. The default is An autogenerated UUID.

previousModelTrainingJobIdstring

The job ID of a completed model-training job that you want to update incrementally based on updated data.

dataProcessingJobIdstring required

The job ID of the completed data-processing job that has created the data that the training will work with.

trainModelS3Locationstring required

The location in Amazon S3 where the model artifacts are to be stored.

sagemakerIamRoleArnstring

The ARN of an IAM role for SageMaker execution.This must be listed in your DB cluster parameter group or an error will occur.

neptuneIamRoleArnstring

The ARN of an IAM role that provides Neptune access to SageMaker and Amazon S3 resources. This must be listed in your DB cluster parameter group or an error will occur.

baseProcessingInstanceTypestring

The type of ML instance used in preparing and managing training of ML models. This is a CPU instance chosen based on memory requirements for processing the training data and model.

trainingInstanceTypestring

The type of ML instance used for model training. All Neptune ML models support CPU, GPU, and multiGPU training. The default is <code>ml.p3.2xlarge</code>. Choosing the right instance type for training depends on the task type, graph size, and your budget.

trainingInstanceVolumeSizeInGBinteger

The disk volume size of the training instance. Both input data and the output model are stored on disk, so the volume size must be large enough to hold both data sets. The default is 0. If not specified or 0, Neptune ML selects a disk volume size based on the recommendation generated in the data processing step.

trainingTimeOutInSecondsinteger

Timeout in seconds for the training job. The default is 86,400 (1 day).

maxHPONumberOfTrainingJobsinteger

Maximum total number of training jobs to start for the hyperparameter tuning job. The default is 2. Neptune ML automatically tunes the hyperparameters of the machine learning model. To obtain a model that performs well, use at least 10 jobs (in other words, set <code>maxHPONumberOfTrainingJobs</code> to 10). In general, the more tuning runs, the better the results.

maxHPOParallelTrainingJobsinteger

Maximum number of parallel training jobs to start for the hyperparameter tuning job. The default is 2. The number of parallel jobs you can run is limited by the available resources on your training instance.

subnetsString[]

The IDs of the subnets in the Neptune VPC. The default is None.

securityGroupIdsString[]

The VPC security group IDs. The default is None.

volumeEncryptionKMSKeystring

The Amazon Key Management Service (KMS) key that SageMaker uses to encrypt data on the storage volume attached to the ML compute instances that run the training job. The default is None.

s3OutputEncryptionKMSKeystring

The Amazon Key Management Service (KMS) key that SageMaker uses to encrypt the output of the processing job. The default is none.

enableManagedSpotTrainingboolean

Optimizes the cost of training machine-learning models by using Amazon Elastic Compute Cloud spot instances. The default is <code>False</code>.

Response

Success

idstring

The unique ID of the new model training job.

arnstring

The ARN of the new model training job.

creationTimeInMillisinteger

The model training job creation time, in milliseconds.