“…The economic hierarchy index is used to categorize the economic hierarchy of each federal subject in Russia's Far East Federal District, so as to measure their economic functional degree in the current researches (Chu et al., 2022; Chu & Jiang, 2015; Chu & Zhang,
2018; Guo et al., 2020). The formula is:
where K Pi , K Gi , K Ai , K Fi , K Ri , K Ci , K Si is the hierarchy index of the annual resident population, gross regional product, the average monthly wage of employees, fixed capital investment, retail trade turnover, foreign trade volume, and passenger flow.…”