共用方式為

LearningModelDevice 類別

  • 參考

定義

命名空間:
Windows.AI.MachineLearning
編輯

用來評估機器學習模型的裝置。

public ref class LearningModelDevice sealed
/// [Windows.Foundation.Metadata.Activatable(Windows.AI.MachineLearning.ILearningModelDeviceFactory, 65536, "Windows.AI.MachineLearning.MachineLearningContract")]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.AI.MachineLearning.MachineLearningContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class LearningModelDevice final
[Windows.Foundation.Metadata.Activatable(typeof(Windows.AI.MachineLearning.ILearningModelDeviceFactory), 65536, "Windows.AI.MachineLearning.MachineLearningContract")]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.AI.MachineLearning.MachineLearningContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class LearningModelDevice
function LearningModelDevice(deviceKind)
Public NotInheritable Class LearningModelDevice
繼承
Object Platform::Object IInspectable LearningModelDevice
屬性
ActivatableAttribute ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows 需求

裝置系列
Windows 10, version 1809 (已於 10.0.17763.0 引進)
API contract
Windows.AI.MachineLearning.MachineLearningContract (已於 v1.0 引進)

範例

下列範例會載入模型、選取要評估模型的裝置，並建立評估會話。

private async Task LoadModelAsync(string _modelFileName, bool _useGPU)
{
    LearningModel _model;
    LearningModelSession _session;

    try
    {
        // Load and create the model
        var modelFile = 
            await StorageFile.GetFileFromApplicationUriAsync(new Uri($"ms-appx:///Assets/{_modelFileName}"));
        _model = await LearningModel.LoadFromStorageFileAsync(modelFile);

        // Select the device to evaluate on
        LearningModelDevice device = null;
        if (_useGPU)
        {
            // Use a GPU or other DirectX device to evaluate the model.
            device = new LearningModelDevice(LearningModelDeviceKind.DirectX);
        }
        else
        {
            // Use the CPU to evaluate the model.
            device = new LearningModelDevice(LearningModelDeviceKind.Cpu);
        }

        // Create the evaluation session with the model and device.
        _session = new LearningModelSession(_model, device);

    }
    catch (Exception ex)
    {
        StatusBlock.Text = $"error: {ex.Message}";
        _model = null;
    }
}

備註

Windows Server

若要在 Windows Server 上使用此 API，您必須搭配桌面體驗使用 Windows Server 2019。

執行緒安全

此 API 是安全線程。

建構函式

LearningModelDevice(LearningModelDeviceKind)

從指定的LearningModelDeviceKind建立LearningModelDevice。

屬性

AdapterId

傳回裝置的唯一識別碼。
Direct3D11Device

傳回裝置的 IDirect3DDevice 。

方法

CreateFromDirect3D11Device(IDirect3DDevice)

從指定的IDirect3DDevice建立LearningModelDevice。

適用於

另請參閱