var pipeline = new LearningPipeline();
pipeline.Add(new TextLoader<HousePriceData>(dataPath, header: true, sep: ","));
pipeline.Add(new ColumnConcatenator(outputColumn: "NumericalFeatures",
"**SqftLiving1**", "SqftLot", "SqftAbove", "SqftBasement", "Lat", "Long", "SqftLiving15", "SqftLot15"));
In code below supply a wrong column (bolded below)
Currently wrong column discovered during Train command
Ideally pipeline.Add() should return an error saying that column doesn't exist.