Function name
Equation
Reference
Root Mean Square Error (RMSE),
RMSE = ∑ i = 1 n ( x i e x p − x i p r e d ) 2 / ( n − p − 1 )
[27]
Averages
X e ¯ = 1 n ∑ i = 1 n x i e x p , X p ¯ = 1 n ∑ i = 1 n x i p r e d
Correlation coefficient (CC)
CC = 1 − ∑ i = 1 n ( x i e x p − x i p r e d ) 2 ∑ i = 1 n ( x i e x p − X e ¯ ) 2
[69]