private static ICheckedItemList <StringValue> CreateVariableItemList(IPreprocessingData preprocessingData)
        {
            ICheckedItemList <StringValue> itemList = new CheckedItemList <StringValue>();

            foreach (string name in preprocessingData.GetDoubleVariableNames())
            {
                var  n             = new StringValue(name);
                bool isInputTarget = preprocessingData.InputVariables.Contains(name) || preprocessingData.TargetVariable == name;
                itemList.Add(n, isInputTarget);
            }
            return(new ReadOnlyCheckedItemList <StringValue>(itemList));
        }
 public IEnumerable <string> GetDoubleVariableNames()
 {
     return(originalData.GetDoubleVariableNames());
 }