[Pkanalix] Get the value of minimized cost in CA
Get the value of the cost function minimized in CA, and additional criteria to compare models.
Usage
getCACost()
Value
A data frame with the values of total cost, -2LL, AIC and BIC computed during the last run.
Details
The detailed formulas for cost, -2LL, AIC and BIC are given in https://pkanalix.lixoft.com/ca-settings/.
-
Cost: weighted sum of squared residuals. Weights are specified in
setCASettings. Additional weights are applied to balance the number of observations in each profile. -
-2LL: Twice the negative log-likelihood based on the obtained cost.
-
AIC: Akaike Information Criteria calculated based on a penalization of -2LL by the number of optimized parameters.
-
BIC: Bayesian Information Criteria calculated based on a penalization of -2LL by the number of optimized parameters and the total number of data points.