Crea un trabajo de ajuste de hiperparámetros para el paquete de Python

Crea un trabajo de ajuste de hiperparámetros para el paquete de Python mediante el método create_hyperparameter_tuning_job.

Explora más

Para obtener documentación en la que se incluye esta muestra de código, consulta lo siguiente:

• Crea un trabajo de ajuste de hiperparámetros

Muestra de código

Java

Antes de probar este ejemplo, sigue las instrucciones de configuración para Java incluidas en la guía de inicio rápido de Vertex AI sobre cómo usar bibliotecas cliente. Para obtener más información, consulta la documentación de referencia de la API de Vertex AI Java.

Para autenticarte en Vertex AI, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.

import com.google.cloud.aiplatform.v1.AcceleratorType;
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.PythonPackageSpec;
import com.google.cloud.aiplatform.v1.StudySpec;
import com.google.cloud.aiplatform.v1.StudySpec.MetricSpec;
import com.google.cloud.aiplatform.v1.StudySpec.MetricSpec.GoalType;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec.ConditionalParameterSpec;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec.ConditionalParameterSpec.DiscreteValueCondition;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec.DiscreteValueSpec;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec.DoubleValueSpec;
import com.google.cloud.aiplatform.v1.StudySpec.ParameterSpec.ScaleType;
import com.google.cloud.aiplatform.v1.WorkerPoolSpec;
import java.io.IOException;
import java.util.Arrays;

public class CreateHyperparameterTuningJobPythonPackageSample {

  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 executorImageUri = "EXECUTOR_IMAGE_URI";
    String packageUri = "PACKAGE_URI";
    String pythonModule = "PYTHON_MODULE";
    createHyperparameterTuningJobPythonPackageSample(
        project, displayName, executorImageUri, packageUri, pythonModule);
  }

  static void createHyperparameterTuningJobPythonPackageSample(
      String project,
      String displayName,
      String executorImageUri,
      String packageUri,
      String pythonModule)
      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)) {
      // study spec
      MetricSpec metric =
          MetricSpec.newBuilder().setMetricId("val_rmse").setGoal(GoalType.MINIMIZE).build();

      // decay
      DoubleValueSpec doubleValueSpec =
          DoubleValueSpec.newBuilder().setMinValue(1e-07).setMaxValue(1).build();
      ParameterSpec parameterDecaySpec =
          ParameterSpec.newBuilder()
              .setParameterId("decay")
              .setDoubleValueSpec(doubleValueSpec)
              .setScaleType(ScaleType.UNIT_LINEAR_SCALE)
              .build();
      Double[] decayValues = {32.0, 64.0};
      DiscreteValueCondition discreteValueDecay =
          DiscreteValueCondition.newBuilder().addAllValues(Arrays.asList(decayValues)).build();
      ConditionalParameterSpec conditionalParameterDecay =
          ConditionalParameterSpec.newBuilder()
              .setParameterSpec(parameterDecaySpec)
              .setParentDiscreteValues(discreteValueDecay)
              .build();

      // learning rate
      ParameterSpec parameterLearningSpec =
          ParameterSpec.newBuilder()
              .setParameterId("learning_rate")
              .setDoubleValueSpec(doubleValueSpec) // Use the same min/max as for decay
              .setScaleType(ScaleType.UNIT_LINEAR_SCALE)
              .build();

      Double[] learningRateValues = {4.0, 8.0, 16.0};
      DiscreteValueCondition discreteValueLearning =
          DiscreteValueCondition.newBuilder()
              .addAllValues(Arrays.asList(learningRateValues))
              .build();
      ConditionalParameterSpec conditionalParameterLearning =
          ConditionalParameterSpec.newBuilder()
              .setParameterSpec(parameterLearningSpec)
              .setParentDiscreteValues(discreteValueLearning)
              .build();

      // batch size
      Double[] batchSizeValues = {4.0, 8.0, 16.0, 32.0, 64.0, 128.0};

      DiscreteValueSpec discreteValueSpec =
          DiscreteValueSpec.newBuilder().addAllValues(Arrays.asList(batchSizeValues)).build();
      ParameterSpec parameter =
          ParameterSpec.newBuilder()
              .setParameterId("batch_size")
              .setDiscreteValueSpec(discreteValueSpec)
              .setScaleType(ScaleType.UNIT_LINEAR_SCALE)
              .addConditionalParameterSpecs(conditionalParameterDecay)
              .addConditionalParameterSpecs(conditionalParameterLearning)
              .build();

      // trial_job_spec
      MachineSpec machineSpec =
          MachineSpec.newBuilder()
              .setMachineType("n1-standard-4")
              .setAcceleratorType(AcceleratorType.NVIDIA_TESLA_T4)
              .setAcceleratorCount(1)
              .build();

      PythonPackageSpec pythonPackageSpec =
          PythonPackageSpec.newBuilder()
              .setExecutorImageUri(executorImageUri)
              .addPackageUris(packageUri)
              .setPythonModule(pythonModule)
              .build();

      WorkerPoolSpec workerPoolSpec =
          WorkerPoolSpec.newBuilder()
              .setMachineSpec(machineSpec)
              .setReplicaCount(1)
              .setPythonPackageSpec(pythonPackageSpec)
              .build();

      StudySpec studySpec =
          StudySpec.newBuilder()
              .addMetrics(metric)
              .addParameters(parameter)
              .setAlgorithm(StudySpec.Algorithm.RANDOM_SEARCH)
              .build();
      CustomJobSpec trialJobSpec =
          CustomJobSpec.newBuilder().addWorkerPoolSpecs(workerPoolSpec).build();
      // hyperparameter_tuning_job
      HyperparameterTuningJob hyperparameterTuningJob =
          HyperparameterTuningJob.newBuilder()
              .setDisplayName(displayName)
              .setMaxTrialCount(4)
              .setParallelTrialCount(2)
              .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());
    }
  }
}

Python

Antes de probar este ejemplo, sigue las instrucciones de configuración para Python incluidas en la guía de inicio rápido de Vertex AI sobre cómo usar bibliotecas cliente. Para obtener más información, consulta la documentación de referencia de la API de Vertex AI Python.

Para autenticarte en Vertex AI, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.

from google.cloud import aiplatform


def create_hyperparameter_tuning_job_python_package_sample(
    project: str,
    display_name: str,
    executor_image_uri: str,
    package_uri: str,
    python_module: 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)

    # study_spec
    metric = {
        "metric_id": "val_rmse",
        "goal": aiplatform.gapic.StudySpec.MetricSpec.GoalType.MINIMIZE,
    }

    conditional_parameter_decay = {
        "parameter_spec": {
            "parameter_id": "decay",
            "double_value_spec": {"min_value": 1e-07, "max_value": 1},
            "scale_type": aiplatform.gapic.StudySpec.ParameterSpec.ScaleType.UNIT_LINEAR_SCALE,
        },
        "parent_discrete_values": {"values": [32, 64]},
    }
    conditional_parameter_learning_rate = {
        "parameter_spec": {
            "parameter_id": "learning_rate",
            "double_value_spec": {"min_value": 1e-07, "max_value": 1},
            "scale_type": aiplatform.gapic.StudySpec.ParameterSpec.ScaleType.UNIT_LINEAR_SCALE,
        },
        "parent_discrete_values": {"values": [4, 8, 16]},
    }
    parameter = {
        "parameter_id": "batch_size",
        "discrete_value_spec": {"values": [4, 8, 16, 32, 64, 128]},
        "scale_type": aiplatform.gapic.StudySpec.ParameterSpec.ScaleType.UNIT_LINEAR_SCALE,
        "conditional_parameter_specs": [
            conditional_parameter_decay,
            conditional_parameter_learning_rate,
        ],
    }

    # trial_job_spec
    machine_spec = {
        "machine_type": "n1-standard-4",
        "accelerator_type": aiplatform.gapic.AcceleratorType.NVIDIA_TESLA_K80,
        "accelerator_count": 1,
    }
    worker_pool_spec = {
        "machine_spec": machine_spec,
        "replica_count": 1,
        "python_package_spec": {
            "executor_image_uri": executor_image_uri,
            "package_uris": [package_uri],
            "python_module": python_module,
            "args": [],
        },
    }

    # hyperparameter_tuning_job
    hyperparameter_tuning_job = {
        "display_name": display_name,
        "max_trial_count": 4,
        "parallel_trial_count": 2,
        "study_spec": {
            "metrics": [metric],
            "parameters": [parameter],
            "algorithm": aiplatform.gapic.StudySpec.Algorithm.RANDOM_SEARCH,
        },
        "trial_job_spec": {"worker_pool_specs": [worker_pool_spec]},
    }
    parent = f"projects/{project}/locations/{location}"
    response = client.create_hyperparameter_tuning_job(
        parent=parent, hyperparameter_tuning_job=hyperparameter_tuning_job
    )
    print("response:", response)

¿Qué sigue?

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