# classes: .bracl, .multinom, .brmultinom
## TODO add ci_method later?
############# .bracl --------------
#' @rdname model_parameters.mlm
#' @export
model_parameters.bracl <- function(model,
ci = 0.95,
bootstrap = FALSE,
iterations = 1000,
standardize = NULL,
exponentiate = FALSE,
p_adjust = NULL,
summary = getOption("parameters_summary", FALSE),
keep = NULL,
drop = NULL,
verbose = TRUE,
...) {
# validation check, warn if unsupported argument is used.
dot_args <- .check_dots(
dots = list(...),
not_allowed = c("vcov", "vcov_args"),
class(model)[1],
verbose = verbose
)
# detect number of levels of response
resp <- insight::get_response(model)
# for cbind(), response is a data frame, not a factor. We then need to use
# number of columns as "nl"
if (is.data.frame(resp)) {
nl <- ncol(resp)
} else {
nl <- .safe(nlevels(factor(resp)), 0)
}
# merge by response as well if more than 2 levels
if (nl > 2) {
merge_by <- c("Parameter", "Response")
} else {
merge_by <- "Parameter"
}
fun_args <- list(
model,
ci = ci,
bootstrap = bootstrap,
iterations = iterations,
merge_by = merge_by,
standardize = standardize,
exponentiate = exponentiate,
p_adjust = p_adjust,
keep_parameters = keep,
drop_parameters = drop,
summary = summary,
vcov = NULL,
vcov_args = NULL
)
fun_args <- c(fun_args, dot_args)
out <- do.call(".model_parameters_generic", fun_args)
attr(out, "object_name") <- insight::safe_deparse_symbol(substitute(model))
out
}
#' @export
ci.bracl <- function(x, ci = 0.95, method = NULL, verbose = TRUE, ...) {
# validation check, warn if unsupported argument is used.
dot_args <- .check_dots(
dots = list(...),
not_allowed = c("vcov", "vcov_args"),
class(x)[1],
function_name = "ci",
verbose = verbose
)
params <- insight::get_parameters(x)
out <- .ci_generic(model = x, ci = ci, method = method, ...)
if ("Response" %in% colnames(params)) {
out$Response <- params$Response
}
out
}
#' @export
standard_error.bracl <- function(model, verbose = TRUE, ...) {
# validation check, warn if unsupported argument is used.
dot_args <- .check_dots(
dots = list(...),
not_allowed = c("vcov", "vcov_args"),
class(model)[1],
function_name = "standard_error",
verbose = verbose
)
smry <- suppressMessages(as.data.frame(stats::coef(summary(model))))
se <- smry[[2]]
names(se) <- rownames(smry)
params <- insight::get_parameters(model)
.data_frame(
Parameter = params$Parameter,
SE = as.vector(se),
Response = params$Response
)
}
#' @export
p_value.bracl <- function(model, verbose = TRUE, ...) {
# validation check, warn if unsupported argument is used.
dot_args <- .check_dots(
dots = list(...),
not_allowed = c("vcov", "vcov_args"),
class(model)[1],
function_name = "p_value",
verbose = verbose
)
smry <- suppressMessages(as.data.frame(stats::coef(summary(model))))
p <- smry[[4]]
names(p) <- rownames(smry)
params <- insight::get_parameters(model)
.data_frame(
Parameter = params$Parameter,
p = as.vector(p),
Response = params$Response
)
}
############# .multinom --------------
#' @export
model_parameters.multinom <- function(model,
ci = 0.95,
ci_method = "normal",
bootstrap = FALSE,
iterations = 1000,
standardize = NULL,
exponentiate = FALSE,
p_adjust = NULL,
summary = getOption("parameters_summary", FALSE),
keep = NULL,
drop = NULL,
verbose = TRUE,
...) {
model_parameters.bracl(
model,
ci = ci,
ci_method = ci_method,
bootstrap = bootstrap,
iterations = iterations,
standardize = standardize,
exponentiate = exponentiate,
p_adjust = p_adjust,
summary = summary,
keep = keep,
drop = drop,
verbose = verbose,
...
)
}
#' @export
ci.multinom <- function(x, ci = 0.95, method = "normal", verbose = TRUE, ...) {
ci.bracl(x, ci = ci, method = method, verbose = verbose, ...)
}
#' @export
standard_error.multinom <- function(model, ...) {
se <- tryCatch(
{
std_err <- summary(model)$standard.errors
if (is.null(std_err)) {
vc <- insight::get_varcov(model)
std_err <- as.vector(sqrt(diag(vc)))
} else {
if (is.matrix(std_err)) {
tmp <- NULL
for (i in seq_len(nrow(std_err))) {
tmp <- c(tmp, as.vector(std_err[i, ]))
}
} else {
tmp <- as.vector(std_err)
}
std_err <- tmp
}
std_err
},
error = function(e) {
vc <- insight::get_varcov(model)
as.vector(sqrt(diag(vc)))
}
)
params <- insight::get_parameters(model)
if ("Response" %in% colnames(params)) {
.data_frame(
Parameter = params$Parameter,
SE = se,
Response = params$Response
)
} else {
.data_frame(
Parameter = params$Parameter,
SE = se
)
}
}
#' @export
p_value.multinom <- function(model, method = "normal", ...) {
stat <- insight::get_statistic(model)
out <- p_value.default(model, method = method, ...)
if (!is.null(stat$Response)) {
out$Response <- stat$Response
}
out
}
#' @export
simulate_parameters.multinom <- function(model,
iterations = 1000,
centrality = "median",
ci = 0.95,
ci_method = "quantile",
test = "p-value",
...) {
sim_data <- simulate_model(model, iterations = iterations, ...)
out <- .summary_bootstrap(
data = sim_data,
test = test,
centrality = centrality,
ci = ci,
ci_method = ci_method,
...
)
params <- insight::get_parameters(model)
out$Parameter <- params$Parameter
if ("Response" %in% colnames(params)) {
out$Response <- params$Response
}
class(out) <- c("parameters_simulate", "see_parameters_simulate", class(out))
attr(out, "object_name") <- insight::safe_deparse_symbol(substitute(model))
attr(out, "iterations") <- iterations
attr(out, "ci") <- ci
attr(out, "ci_method") <- ci_method
attr(out, "centrality") <- centrality
out
}
############# .brmultinom --------------
#' @export
model_parameters.brmultinom <- model_parameters.bracl
#' @export
ci.brmultinom <- ci.bracl
#' @export
standard_error.brmultinom <- standard_error.multinom
#' @export
p_value.brmultinom <- p_value.multinom
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