R/gdm_prep_calc_counts.R

In alexanderrobitzsch/CDM: Cognitive Diagnosis Modeling

## File Name: gdm_prep_calc_counts.R
## File Version: 0.06

gdm_prep_calc_counts <- function(K, G, group, weights, dat.resp, dat.ind, use.freqpatt)
{
    dat.ind2 <- as.list( 1:(K+1) )
    ind.group <- as.list( 1:G )
    for (kk in 1:(K+1)){
        l1 <- as.list(1:G)
        for (gg in 1:G){
            if ( ! use.freqpatt ){
                ind.gg <- which( group==gg )
                ind.group[[gg]] <- ind.gg
                dkk <- (dat.ind[[kk]])[ ind.gg, ]
                l1[[gg]] <- dkk * dat.resp[ind.gg,] * weights[ind.gg]
            }
            if ( use.freqpatt ){
                dkk <- dat.ind[[kk]]
                if (G>1){
                    wgg <- weights[,gg]
                }
                if (G==1){
                    wgg <- weights
                    ind.group[[gg]] <- which( group==gg)
                }
                l1[[gg]] <- dkk * dat.resp * wgg
            }
        }   # end gg
        dat.ind2[[kk]] <- l1
    }
    #-------- output
    res <- list(ind.group=ind.group, dat.ind2=dat.ind2)
    return(res)
}