/// <summary> /// Creates a default data scorer appropriate to the predictor's prediction kind. /// </summary> /// <param name="env">The host environment to use.</param> /// <param name="data">The data to score.</param> /// <param name="predictor">The predictor to score.</param> /// <param name="trainSchema">The training data schema from which the scorer can optionally extract /// additional information, e.g., label names. If this is <c>null</c>, no information will be /// extracted.</param> /// <returns>The scored data.</returns> public static IDataScorerTransform CreateDefaultScorer(this IHostEnvironment env, RoleMappedData data, Predictor predictor, RoleMappedSchema trainSchema = null) { Contracts.CheckValue(env, nameof(env)); env.CheckValue(data, nameof(data)); env.CheckValue(predictor, nameof(predictor)); env.CheckValueOrNull(trainSchema); return(ScoreUtils.GetScorer(predictor.Pred, data, env, trainSchema)); }
/// <summary> /// Creates a data scorer from the 'LoadName{settings}' string. /// </summary> /// <param name="env">The host environment to use.</param> /// <param name="settings">The settings string.</param> /// <param name="data">The data to score.</param> /// <param name="predictor">The predictor to score.</param> /// <param name="trainSchema">The training data schema from which the scorer can optionally extract /// additional information, e.g., label names. If this is <c>null</c>, no information will be /// extracted.</param> /// <returns>The scored data.</returns> public static IDataScorerTransform CreateScorer(this IHostEnvironment env, string settings, RoleMappedData data, Predictor predictor, RoleMappedSchema trainSchema = null) { Contracts.CheckValue(env, nameof(env)); env.CheckValue(data, nameof(data)); env.CheckValue(predictor, nameof(predictor)); env.CheckValueOrNull(trainSchema); ICommandLineComponentFactory scorerFactorySettings = ParseScorerSettings(settings); var bindable = ScoreUtils.GetSchemaBindableMapper(env, predictor.Pred, scorerFactorySettings: scorerFactorySettings); var mapper = bindable.Bind(env, data.Schema); return(CreateCore <IDataScorerTransform, SignatureDataScorer>(env, settings, data.Data, mapper, trainSchema)); }