title: What columns are available for the prediction/output class in ml.net
body: <p>I'm running binary classifiers in ML.net. The output class looks like below, it has a "PredictedLabel" and through trial and error I've discovered the that "score" and "probability" are also valid. Where are the valid properties documented? And is there a property that I can use (with a corresponding name on the input data class) that will allow me to store a row id on the input data that will be output with the prediction?</p>
  
  <p>Thanks</p>
  
  <pre><code>public class TargetData
  {
      [ColumnName("PredictedLabel")]
      public bool Value { get; set; }
  
      public float Score { get; set; }
      public float Probability { get; set; }
  }
  </code></pre>