AbstractSimpleRegressionMeasure 
Computes the mean error.

Bias 
Computes the bias (mean error) for regression models.

Dice 
SĂ¸rensenâ€“Dice coefficient:
https://en.wikipedia.org/wiki/S%C3%B8rensen%E2%80%93Dice_coefficient

MSLE 
Computes the mean squared log error (MSLE) for regression models.

RPD 
Computes the RPD (Ratio of Performance to Deviation) for regression models:
RPD = SD / RMSE
https://www.academia.edu/4303409/Why_you_dont_need_to_use_RPD

RSquared 
Computes the R^2 for regression models.

SDR 
Computes the SDR (Standard Deviation of Residuals) for regression models.
