/// <summary>
/// Initializes a new instance of the <see cref="MLModelTrainer"/> class.
/// </summary>
/// <param name="userConnection">The user connection.</param>
/// <param name="modelConfig">The model configuration.</param>
public MLModelTrainer(UserConnection userConnection, MLModelConfig modelConfig)
{
userConnection.CheckArgumentNull("userConnection");
modelConfig.CheckArgumentNull("modelConfig");
modelConfig.Id.CheckArgumentEmpty("MLModelConfig.Id");
_userConnection = userConnection;
_modelConfig = modelConfig;
_proxy = InitServiceProxy();
ConstructorArgument userConnectionArg = new ConstructorArgument("userConnection", _userConnection);
_modelEventsNotifier = ClassFactory.Get <MLModelEventsNotifier>(userConnectionArg);
_metadataGenerator = ClassFactory.Get <IMLMetadataGenerator>();
_queryBuilder = ClassFactory.Get <IMLModelQueryBuilder>(userConnectionArg);
}
/// <summary>
/// Sets human-readable localized captions and display values for feature weights.
/// </summary>
/// <param name="userConnection">The user connection.</param>
/// <param name="features">The features.</param>
/// <param name="modelId">The model identifier.</param>
/// <param name="isPrediction"><c>true</c> if it's for prediction, false - for training.</param>
public static void LocalizeFeatures(UserConnection userConnection, List <LocalizedFeatureWeight> features,
Guid modelId, bool isPrediction)
{
IMLModelLoader loader = ClassFactory.Get <IMLModelLoader>();
if (!loader.TryLoadModel(userConnection, modelId, out MLModelConfig model))
{
return;
}
loader.LoadModelMetadataCaptions(userConnection, model);
var modelQueryBuilder = ClassFactory.Get <IMLModelQueryBuilder>(
new ConstructorArgument("userConnection", userConnection));
var query = isPrediction ? model.BatchPredictionQuery : model.TrainingSetQuery;
var select = modelQueryBuilder.BuildSelect(model.EntitySchemaId, query, model.ColumnExpressions);
IMLMetadataGenerator metadataGenerator = ClassFactory.Get <IMLMetadataGenerator>();
var metadata = metadataGenerator.GenerateMetadata(select, model.MetaData, fillColumnsInfo: true);
var columnExpressionMapping = modelQueryBuilder.GetColumnExpressionMapping(model.EntitySchemaId,
query, model.ColumnExpressions);
FillCaptions(userConnection, features, columnExpressionMapping, model.EntitySchemaId, metadata);
FillDisplayValues(userConnection, features, columnExpressionMapping, model.EntitySchemaId, metadata);
}
