Créer une tâche de réglage d'hyperparamètres

Crée une tâche de réglage des hyperparamètres à l'aide de la méthode create_hyperparameter_tuning_job.

Exemple de code

Java

Avant d'essayer cet exemple, suivez les instructions de configuration pour Java décrites dans le guide de démarrage rapide de Vertex AI à l'aide des bibliothèques clientes. Pour en savoir plus, consultez la documentation de référence de l'API Vertex AI Java.

Pour vous authentifier auprès de Vertex AI, configurez le service Identifiants par défaut de l'application. Pour en savoir plus, consultez Configurer l'authentification pour un environnement de développement local.

import com.google.cloud.aiplatform.v1.AcceleratorType;
import com.google.cloud.aiplatform.v1.ContainerSpec;
import com.google.cloud.aiplatform.v1.CustomJobSpec;
import com.google.cloud.aiplatform.v1.HyperparameterTuningJob;
import com.google.cloud.aiplatform.v1.JobServiceClient;
import com.google.cloud.aiplatform.v1.JobServiceSettings;
import com.google.cloud.aiplatform.v1.LocationName;
import com.google.cloud.aiplatform.v1.MachineSpec;
import com.google.cloud.aiplatform.v1.StudySpec;
import com.google.cloud.aiplatform.v1.WorkerPoolSpec;
import java.io.IOException;

public class CreateHyperparameterTuningJobSample {

  public static void main(String[] args) throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String project = "PROJECT";
    String displayName = "DISPLAY_NAME";
    String containerImageUri = "CONTAINER_IMAGE_URI";
    createHyperparameterTuningJobSample(project, displayName, containerImageUri);
  }

  static void createHyperparameterTuningJobSample(
      String project, String displayName, String containerImageUri) throws IOException {
    JobServiceSettings settings =
        JobServiceSettings.newBuilder()
            .setEndpoint("us-central1-aiplatform.googleapis.com:443")
            .build();
    String location = "us-central1";

    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the "close" method on the client to safely clean up any remaining background resources.
    try (JobServiceClient client = JobServiceClient.create(settings)) {
      StudySpec.MetricSpec metric0 =
          StudySpec.MetricSpec.newBuilder()
              .setMetricId("accuracy")
              .setGoal(StudySpec.MetricSpec.GoalType.MAXIMIZE)
              .build();
      StudySpec.ParameterSpec.DoubleValueSpec doubleValueSpec =
          StudySpec.ParameterSpec.DoubleValueSpec.newBuilder()
              .setMinValue(0.001)
              .setMaxValue(0.1)
              .build();
      StudySpec.ParameterSpec parameter0 =
          StudySpec.ParameterSpec.newBuilder()
              // Learning rate.
              .setParameterId("lr")
              .setDoubleValueSpec(doubleValueSpec)
              .build();
      StudySpec studySpec =
          StudySpec.newBuilder().addMetrics(metric0).addParameters(parameter0).build();
      MachineSpec machineSpec =
          MachineSpec.newBuilder()
              .setMachineType("n1-standard-4")
              .setAcceleratorType(AcceleratorType.NVIDIA_TESLA_T4)
              .setAcceleratorCount(1)
              .build();
      ContainerSpec containerSpec =
          ContainerSpec.newBuilder().setImageUri(containerImageUri).build();
      WorkerPoolSpec workerPoolSpec0 =
          WorkerPoolSpec.newBuilder()
              .setMachineSpec(machineSpec)
              .setReplicaCount(1)
              .setContainerSpec(containerSpec)
              .build();
      CustomJobSpec trialJobSpec =
          CustomJobSpec.newBuilder().addWorkerPoolSpecs(workerPoolSpec0).build();
      HyperparameterTuningJob hyperparameterTuningJob =
          HyperparameterTuningJob.newBuilder()
              .setDisplayName(displayName)
              .setMaxTrialCount(2)
              .setParallelTrialCount(1)
              .setMaxFailedTrialCount(1)
              .setStudySpec(studySpec)
              .setTrialJobSpec(trialJobSpec)
              .build();
      LocationName parent = LocationName.of(project, location);
      HyperparameterTuningJob response =
          client.createHyperparameterTuningJob(parent, hyperparameterTuningJob);
      System.out.format("response: %s\n", response);
      System.out.format("Name: %s\n", response.getName());
    }
  }
}

Node.js

Avant d'essayer cet exemple, suivez les instructions de configuration pour Node.js décrites dans le guide de démarrage rapide de Vertex AI à l'aide des bibliothèques clientes. Pour en savoir plus, consultez la documentation de référence de l'API Vertex AI Node.js.

/**
 * TODO(developer): Uncomment these variables before running the sample.
 * (Not necessary if passing values as arguments)
 */
/*
const displayName = 'YOUR HYPERPARAMETER TUNING JOB;
const containerImageUri = 'TUNING JOB CONTAINER URI;
const project = 'YOUR PROJECT ID';
const location = 'us-central1';
  */
// Imports the Google Cloud Pipeline Service Client library
const {JobServiceClient} = require('@google-cloud/aiplatform');

// Specifies the location of the api endpoint
const clientOptions = {
  apiEndpoint: 'us-central1-aiplatform.googleapis.com',
};

// Instantiates a client
const jobServiceClient = new JobServiceClient(clientOptions);

async function createHyperParameterTuningJob() {
  // Configure the parent resource
  const parent = `projects/${project}/locations/${location}`;

  // Create the hyperparameter tuning job configuration
  const hyperparameterTuningJob = {
    displayName,
    maxTrialCount: 2,
    parallelTrialCount: 1,
    maxFailedTrialCount: 1,
    studySpec: {
      metrics: [
        {
          metricId: 'accuracy',
          goal: 'MAXIMIZE',
        },
      ],
      parameters: [
        {
          parameterId: 'lr',
          doubleValueSpec: {
            minValue: 0.001,
            maxValue: 0.1,
          },
        },
      ],
    },
    trialJobSpec: {
      workerPoolSpecs: [
        {
          machineSpec: {
            machineType: 'n1-standard-4',
            acceleratorType: 'NVIDIA_TESLA_K80',
            acceleratorCount: 1,
          },
          replicaCount: 1,
          containerSpec: {
            imageUri: containerImageUri,
            command: [],
            args: [],
          },
        },
      ],
    },
  };

  const [response] = await jobServiceClient.createHyperparameterTuningJob({
    parent,
    hyperparameterTuningJob,
  });

  console.log('Create hyperparameter tuning job response:');
  console.log(`\tDisplay name: ${response.displayName}`);
  console.log(`\tTuning job resource name: ${response.name}`);
  console.log(`\tJob status: ${response.state}`);
}

createHyperParameterTuningJob();

Python

Avant d'essayer cet exemple, suivez les instructions de configuration pour Python décrites dans le guide de démarrage rapide de Vertex AI à l'aide des bibliothèques clientes. Pour en savoir plus, consultez la documentation de référence de l'API Vertex AI Python.

from google.cloud import aiplatform


def create_hyperparameter_tuning_job_sample(
    project: str,
    display_name: str,
    container_image_uri: str,
    location: str = "us-central1",
    api_endpoint: str = "us-central1-aiplatform.googleapis.com",
):
    # The AI Platform services require regional API endpoints.
    client_options = {"api_endpoint": api_endpoint}
    # Initialize client that will be used to create and send requests.
    # This client only needs to be created once, and can be reused for multiple requests.
    client = aiplatform.gapic.JobServiceClient(client_options=client_options)
    hyperparameter_tuning_job = {
        "display_name": display_name,
        "max_trial_count": 2,
        "parallel_trial_count": 1,
        "max_failed_trial_count": 1,
        "study_spec": {
            "metrics": [
                {
                    "metric_id": "accuracy",
                    "goal": aiplatform.gapic.StudySpec.MetricSpec.GoalType.MAXIMIZE,
                }
            ],
            "parameters": [
                {
                    # Learning rate.
                    "parameter_id": "lr",
                    "double_value_spec": {"min_value": 0.001, "max_value": 0.1},
                },
            ],
        },
        "trial_job_spec": {
            "worker_pool_specs": [
                {
                    "machine_spec": {
                        "machine_type": "n1-standard-4",
                        "accelerator_type": aiplatform.gapic.AcceleratorType.NVIDIA_TESLA_K80,
                        "accelerator_count": 1,
                    },
                    "replica_count": 1,
                    "container_spec": {
                        "image_uri": container_image_uri,
                        "command": [],
                        "args": [],
                    },
                }
            ]
        },
    }
    parent = f"projects/{project}/locations/{location}"
    response = client.create_hyperparameter_tuning_job(
        parent=parent, hyperparameter_tuning_job=hyperparameter_tuning_job
    )
    print("response:", response)

Étapes suivantes

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