Find Minimal Grouping Columns for Strata Reconstruction

This function identifies the smallest set of columns in a data frame whose unique combinations can reconstruct the grouping structure defined by the specified strata columns. It removes duplicate, constant, and redundant columns, then searches for the minimal combination that uniquely identifies each stratum.

Usage

select_minimal_grouping_cols(df, strata_cols)

Arguments

df

A data frame.

strata_cols

Column names in df whose unique combination defines the strata.

Value

A data frame containing the strata columns and their minimal set of grouping columns.