Create subsamples of a data list — subsample

Given a data list, return a list of smaller data lists that are generated through random sampling (without replacement). The results of this function can be passed into batch_snf_subsamples() to obtain a list of resampled solutions data frames.

Usage

subsample_dl(
  dl,
  n_subsamples,
  subsample_fraction = NULL,
  n_observations = NULL
)

Arguments

dl: A nested list of input data from data_list().
n_subsamples: Number of subsamples to create.
subsample_fraction: Percentage of patients to include per subsample.
n_observations: Number of patients to include per subsample.

Value

A "list" class object containing n_subsamples number of data lists. Each of those data lists contains a random subsample_fraction fraction of the observations of the provided data list.

Examples

# my_dl <- data_list(
#     list(subc_v, "subcortical_volume", "neuroimaging", "continuous"),
#     list(income, "household_income", "demographics", "continuous"),
#     list(pubertal, "pubertal_status", "demographics", "continuous"),
#     uid = "unique_id"
# )
# 
# my_dl_subsamples <- subsample_dl(
#     my_dl,
#     n_subsamples = 20,
#     subsample_fraction = 0.85
# )