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#' Searches for paths. Ties together highest.mi and return.mis functions.
#' @param base_syntax A character vector containing syntax that never changes.
#' @param fixed_syntax A character vector containing syntax that does not change
#' in a given stage of searching.
#' @param add_syntax A character vector containing the syntax that is allowed
#' to change in a given stage of searching.
#' @param data_list A list of datasets to be used in a given stage of the
#' search. Varies based on group, subgroup, or individual-level stage.
#' @param n_paths The number of paths present in a given stage of searching.
#' Equal to the number of paths in add_syntax.
#' @param n_subj The number of subjects in a given stage of the search. If
#' in the group stage, n_subj equals the number of subjects. If in the subgroup
#' stage, n_subj equals the number of individuals in a given subgroup. At the
#' individual stage, n_subj = 1.
#' @param prop_cutoff The proportion of individuals for whom a path must be
#' nonsignificant in order for it to be dropped from the models. NULL if used
#' at the individual-level.
#' @param elig_paths A character vector containing eligible paths that
#' gimme is allowed to add to the model at a given stage.
#' @param chisq_cutoff Cutoff used in order for MI to be considered significant.
#' Value varies depending on stage of search (e.g., group, subgroup,
#' individual).
#' @param subgroup_stage Logical. Only present in order to instruct gimme
#' what message to print to console using writeLines.
#' @return Returns updated values of n_paths and add_syntax.
#' @keywords internal
search.paths <- function(base_syntax,
fixed_syntax,
add_syntax,
n_paths,
data_list,
elig_paths,
prop_cutoff,
n_subj,
chisq_cutoff,
subgroup_stage = FALSE,
ms_allow = FALSE,
ms_tol = 1e-6,
hybrid = F,
dir_prop_cutoff = 0){
####################################
# ind search
####################################
# base_syntax = dat$syntax
# fixed_syntax = c(grp$group_paths, ind$sub_paths[[k]])
# add_syntax = character()
# n_paths = 0
# data_list = data_list
# elig_paths = dat$candidate_paths
# prop_cutoff = NULL
# n_subj = 1
# chisq_cutoff = qchisq(.99, 1)
# subgroup_stage = FALSE
# ms_allow = TRUE
# ms_tol = 1e-5
####################################
####################################
# group search
####################################
# base_syntax = dat$syntax
# fixed_syntax = NULL
# add_syntax = grp$group_paths
# n_paths = grp$n_group_paths
# data_list = dat$ts_list
# elig_paths = dat$candidate_paths
# prop_cutoff = dat$group_cutoff
# n_subj = dat$n_subj
# chisq_cutoff = qchisq(1-.05/dat$n_subj, 1)
# subgroup_stage = FALSE
# ms_allow = ms_allow
# ms_tol = ms_tol
####################################
obj <- replicate(1,
list(
add_syntax = add_syntax,
n_paths = n_paths,
final.sol = FALSE
), simplify = FALSE
)
cnt <- 1
history <- list()
while(!all(unlist(lapply(obj,"[[","final.sol")))){
obj <- search.paths.ms(
obj,
data_list,
base_syntax,
fixed_syntax,
elig_paths,
prop_cutoff,
n_subj,
chisq_cutoff,
subgroup_stage,
ms_allow,
ms_tol,
hybrid,
dir_prop_cutoff
)
history[[cnt]] <- obj
cnt <- cnt + 1
}
# remove final solution from obj
history <- lapply(history, function(obj){
lapply(obj, "[", c("add_syntax", "n_paths"))
})
return(history)
}
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