In order to select a single model to describe the drying process under each condition, the models that preliminarily obtained the best fits were subjected to the selection criteria of Akaike Information (AIC)

AIC = -2loglike + 2p

Where:

P - Number of parameters; and, Loglike - Logarithm of the likelihood function con-

sidering the estimates of the parameters.

Please what is the formula for the likehood function?

the evaluated parameters are: R2, RMSE and chi-square