Calculates the Normalised RMSE (NRMSE) from observed
and predicted values.
Usage
nrmse(o, p)
Arguments
o
A numeric vector. Observed values.
p
A numeric vector. Predicted values.
Value
Normalised RMSE (NRMSE)
Details
Interpretation: smaller is better. Normalised RMSE (NRMSE) is computed as the RMSE divided by the mean
of the observed valeus. NRMSE is sometimes called Relative RMSE (rRMSE) or
Root mean square standardized (RMSS).
References
Piikki K., Wetterlind J., Soderstrom M., Stenberg B. (2021). Perspectives
on validation in digital soil mapping of continuous attributes. A review.
Soil Use and Management. 10.1111/sum.12694