Clarification needed for pearsonobj function .

[BAJUKA]

In the pearsonobj function (implemented in objectives.py) , class to score conversion is done on both y_true and y_pred and it is used as the loss function for the sts data set. But in sts data set the true values are floating point numbers so is it necessary to do class to score conversion(for y_true) here? If I am going wrong somewhere could you clarify the approach in pearsonobj you are using in context of sts dataset.