Nothing
ordIRT <- function(.rc,
.starts = NULL,
.priors = NULL,
.D = 1L,
.control = NULL
) {
cl <- match.call()
## Input change: Instead of rollcall() object, .rc is now a sparse matrix
divider <- c(paste(rep("=", 20), sep = "", collapse = ""), "\n")
## Default Control
default <- list(threads = 1L,
verbose = FALSE,
maxit = 300,
thresh = 1e-6,
checkfreq = 50
)
cat("\n")
cat(divider)
cat("ordIRT: Ordinal IRT via Expectation Maximization\n\n")
## Main Call to Computation
ret <- .Call('ordIRT_estimate',
PACKAGE = 'emIRT',
.starts$tau,
.starts$DD,
.starts$beta,
.starts$x,
.rc,
.priors$x$mu,
.priors$x$sigma,
.priors$beta$mu,
.priors$beta$sigma,
1L,
ifelse(!is.null(.control$threads), .control$threads, default$threads),
ifelse(!is.null(.control$verbose), .control$verbose, default$verbose),
ifelse(!is.null(.control$maxit), .control$maxit, default$maxit),
ifelse(!is.null(.control$thresh), .control$thresh, default$thresh),
ifelse(!is.null(.control$checkfreq), .control$checkfreq, default$checkfreq)
)
cat(paste("\t",
"Done in ",
ret$runtime$iters,
" iterations, using ",
ret$runtime$threads,
" threads.",
"\n",
sep = ""
)
)
rownames(ret$means$x) <- rownames(.rc)
rownames(ret$vars$x) <- rownames(.rc)
rownames(ret$means$beta) <- colnames(.rc)
rownames(ret$vars$beta) <- colnames(.rc)
rownames(ret$means$tau) <- colnames(.rc)
rownames(ret$vars$tau) <- colnames(.rc)
rownames(ret$means$Delta_sq) <- colnames(.rc)
rownames(ret$means$Delta) <- colnames(.rc)
cat(divider)
ret$call <- cl
class(ret) <- c("ordIRT", "emIRT")
return(ret)
}
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