This method returns several performance metrics for the passed predictions.
measurePredictionPerformance(truevals, predvals)A named array with the following fields:
Pearson's correlation
Spearmans' correlation (order based)
Root Mean Square Error
Mean Absolute Error
Coefficient of determination
mean Normalized Discounted Cumulative Gain with k equal to 0.1, 0.2, 0.5 and 1
true values
predicted values