Internal helper function that sets up the data structures needed for crowd-based filtering and processing of variables and categories.
initialize_crowd_filtering(crowd, args)List with three named elements:
kept_cols_list: Named list of kept column information for each crowd
omitted_cols_list: Named list of omitted variables for each crowd
kept_indep_cats_list: Named list of kept independent categories for each crowd
Character vector of crowd identifiers
List of makeme function arguments
For each crowd, this function calls keep_cols() and keep_indep_cats() to determine which variables and categories should be retained based on the various hiding criteria (NA values, sample sizes, etc.).