dotnet / dotnet/machinelearning
Schema mismatch using AutoML API
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Description
Windows 10
Microsoft.Ml 2.0
Micorsoft.Ml.AutoML 0.20.0
I receive this error :
System.ArgumentOutOfRangeException: 'Schema mismatch for label column 'NextDayClose': expected Single, got Boolean (Parameter 'labelCol')'
when running this code copied and pasted from the AutoML QuickStart sample:
```
// Initialize MLContext
using Microsoft.ML;
using Microsoft.ML.AutoML;
using Microsoft.ML.Data;
using static Microsoft.ML.DataOperationsCatalog;
// Initialize MLContext
MLContext ctx = new MLContext();
// Define data path
var dataPath = Path.GetFullPath(@"CSATest.csv");
// Infer column information
ColumnInferenceResults columnInference =
ctx.Auto().InferColumns(dataPath, labelColumnName: "NextDayClose", groupColumns: false);
// Create text loader
TextLoader loader = ctx.Data.CreateTextLoader(columnInference.TextLoaderOptions);
// Load data into IDataView
IDataView data = loader.Load(dataPath);
// Split into train (80%), validation (20%) sets
TrainTestData trainValidationData = ctx.Data.TrainTestSplit(data, testFraction: 0.2);
//Define pipeline
SweepablePipeline pipeline =
ctx.Auto().Featurizer(data, columnInformation: columnInference.ColumnInformation)
.Append(ctx.Auto().MultiClassification(labelColumnName: columnInference.ColumnInformation.LabelColumnName));
// Create AutoML experiment
AutoMLExperiment experiment = ctx.Auto().CreateExperiment();
// Configure experiment
experiment
.SetPipeline(pipeline)
.SetMulticlassClassificationMetric(MulticlassClassificatioMetric.MicroAccuracy, labelColumn:columnInference.ColumnInformation.LabelColumnName)
.SetTrainingTimeInSeconds(10)
.SetDataset(trainValidationData);
// Log experiment trials
ctx.Log += (_, e) => {
if (e.Source.Equals("AutoMLExperiment"))
{
Console.WriteLine(e.RawMessage);
}
};
// Run experiment
TrialResult experimentResults = await experiment.RunAsync();
// Get best model
var model = experimentResults.Model;
```
Attached is the csv file being called.
[CSATest.csv](https://github.com/dotnet/machinelearning/files/10471206/CSATest.csv)
Is there a way to override the data type that InferColumns is inferring? Looks like it's expecting a bool yet it's a single.
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