Nothing
est.mfa <- function (init_para, Y, itmax, tol, conv_measure, ...) {
p <- ncol(Y)
n <- nrow(Y)
fit <- init_para
loglikeNtau <- try(do.call('logL_tau.mfa', c(list(Y = Y), fit)),
silent = TRUE)
if ((any(class(loglikeNtau) %in% "try-error")) ||
(any(class(loglikeNtau) %in% 'character'))) {
FIT <- paste('in computing the log-likelihood before EM-steps')
class(FIT) <- "error"
return(FIT)
}
fit <- append(fit, loglikeNtau)
for (niter in 1 : itmax) {
FIT <- do.call('Mstep.mfa', c(list(Y = Y), fit))
if (any(class(FIT) %in% 'error')) {
FIT <- paste('in ', niter,
'iteration of the M-step', FIT)
class(FIT) <- "error"
return(FIT)
}
loglikeNtau <- try(do.call('logL_tau.mfa', c(list(Y = Y), FIT)),
silent = TRUE)
if ((any(class(loglikeNtau) %in% "try-error")) ||
(any(class(loglikeNtau) %in% 'character'))) {
FIT <- paste('in computing the log-likelihood after the ', niter,
'th the M-step', FIT$logL, sep = '')
class(FIT) <- "error"
return(FIT)
}
FIT <- append(FIT, loglikeNtau)
if ((any(class(FIT$logL) == "NULL")) ||
(any(class(FIT$logL) == 'character'))) {
FIT <- paste('in computing the log-likelihood after the ', niter,
'th the M-step', FIT$logL, sep = '')
class(FIT) <- "error"
return(FIT)
} else {
if ((FIT$logL == -Inf) | is.na(FIT$logL)) {
FIT <- paste('the log-likelihood computed after the ', niter,
'th iteration of the M-step is not finite', sep = '')
class(FIT) <- "error"
return(FIT)
}
}
if ((conv_measure == "diff") && (abs(FIT$logL - fit$logL) < tol))
break
if ((conv_measure == "ratio") && (abs((FIT$logL - fit$logL) / FIT$logL) < tol))
break
fit <- FIT
}
class(FIT) <- "mfa"
return(FIT)
}
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