Nothing
big.model <- function(y, x, test) {
if ( test == "testIndLogistic" ) {
if ( is.null(x) ) {
n <- length(y)
p <- sum(y)/n
devi <- -2 * ( n * p * log(p) + (n - n * p) * log(1 - p) )
res <- list(be = log( p/(1 - p) ), devi = devi, phi = NA)
} else {
mod <- Rfast::glm_logistic(x, y, maxiters = 5000)
res <- list(be = mod$be, devi = mod$devi, phi = NA)
}
} else if ( test == "testIndMultinom" ) {
if ( is.null(x) ) {
mod <- Rfast::multinom.mle( Rfast::design_matrix(y, ones = FALSE) )
p <- mod$prob
res <- list(be = log(p[-1] / p[1] ), devi = - 2 * mod$loglik, phi = NA)
} else {
mod <- try( Rfast::multinom.reg(x, y, maxiters = 10000), silent = TRUE )
if ( identical(class, "try-error") ) {
res <- list(be = NULL, devi = NULL, phi = NA)
} else res <- list(be = mod$be, devi = mod$devi, phi = NA)
}
} else if ( test == "testIndPois" ) {
if ( is.null(x) ) {
n <- length(y)
m <- sum(y)/n
devi <- 2 * sum(y * log(y), na.rm = TRUE) - 2 * n * m * log(m)
res <- list(be = log(m), devi = devi, phi = NA)
} else {
mod <- Rfast::glm_poisson(x, y)
res <- list(be = mod$be, devi = mod$devi, phi = NA)
}
} else if ( test == "testIndQPois" ) {
if ( is.null(x) ) {
n <- length(y)
m <- sum(y)/n
devi <- 2 * sum(y * log(y), na.rm = TRUE) - 2 * n * m * log(m)
res <- list(be = log(m), devi = devi, phi = NA)
} else {
mod <- Rfast::qpois.reg(x, y, maxiters = 5000)
res <- list(be = mod$be, devi = mod$devi, phi = mod$phi)
}
} else if ( test == "censIndWR" ) {
if ( is.null(x) ) {
mod <- Rfast::weibull.mle(y, maxiters = 500)
res <- list(be = log(mod$param[1]), devi = 2 * mod$loglik, phi = NA)
} else {
mod <- survival::survreg(y ~ x, control = list(iter.max = 10000) )
res <- list(be = mod$coefficients, devi = 2 * mod$loglik[2], phi = NA)
}
} else if ( test == "testIndFisher" ) {
mod <- try( Rfast::lmfit( cbind(1, x), y ), silent = TRUE )
if ( identical(class, "try-error") ) {
res <- list(be = NULL, devi = NULL, phi = NA)
} else {
dm <- dim(x)
devi <- sum( (mod$residuals)^2 )
res <- list(be = mod$be, devi = devi, phi = devi/(dm[1] - dm[2] - 1) )
}
}
res
}
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