R/rm_ic_criteria.R

In sirt: Supplementary Item Response Theory Models

## File Name: rm_ic_criteria.R
## File Version: 0.05

rm_ic_criteria <- function(ic)
{
    dev <- ic$deviance
    # AIC
    ic$AIC <- dev + 2*ic$np
    # BIC
    ic$BIC <- dev + ( log(ic$n) )*ic$np
    # CAIC (consistent AIC)
    ic$CAIC <- dev + ( log(ic$n) + 1 )*ic$np
    # corrected AIC
    ic$AICc <- ic$AIC + 2*ic$np * ( ic$np + 1 ) / ( ic$n - ic$np - 1 )
    #---- output
    return(ic)
}