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#predict fucntions for family(weibull)
merlin_p_weibull_h <- function(gml,t=NULL)
{
if (length(t)==0) t = merlin_util_timevar(gml)
gam = exp(gml$par[gml$dapbindex[[gml$modelind]][1]])
return(exp(merlin_util_xzb(gml,t)) * gam * t ^ (gam - 1))
}
merlin_p_weibull_ch <- function(gml,t=NULL)
{
if (length(t)==0) t = merlin_util_timevar(gml)
if (gml$NI[[gml$modelind]]) {
N = gml$Nobs[gml$modtouse]
gq = merlin_get_GK()
qp = sweep((t %*% (gq[[1]]/2)),1,(t/2),"+")
if (gml$Nlevels & !gml$fixedonly) {
result = matrix(0,nrow=N,ncol=gml$Ndim[gml$Nlevels])
}
else result = matrix(0,nrow=N,ncol=1)
for (q in 1:15) {
result = result + sweep(merlin_p_weibull_h(gml,qp[,q]),1,gq[[2]][q] * t/2,"*")
}
return(result)
}
else {
gam = exp(gml$par[gml$dapbindex[[gml$modelind]][1]])
return(sweep(exp(merlin_util_xzb(gml,t)),1,t^gam,"*"))
}
}
merlin_p_weibull_logch <- function(gml,t=NULL)
{
if (length(t)==0) t = merlin_util_timevar(gml)
return(log(merlin_p_weibull_ch(gml,t)))
}
merlin_p_weibull_s <- function(gml,t=NULL)
{
if (length(t)==0) t = merlin_util_timevar(gml)
return(exp(-merlin_p_weibull_ch(gml,t)))
}
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