“…If it is limited to if and only if the relative growth rate is equal to the perfect correlation, Y ¼ 10000X can be asserted as the unique expression; if it is limited to if and only if the relative absolute growth rate is equal to the perfect correlation, Y ¼ 1 3 X þ 999900 can be asserted as the unique expression. Therefore, in order to meet the needs of describing the diversity of correlation derived from the actual production, various incidence degrees emerged (Deng, 1993;Liu et al, 2010aLiu et al, , b, 2006Deng, 1985;Li, 2016;Xie and Liu, 2009;Dang et al, 2019;Chu and Xiao, 2023;Li et al, 2022;Geng et al, 2020;Zhang et al, 1996;Xiao et al, 1995;Luo and Zhang, 2020;Wu and Qu, 2020). These incidence degrees break through the limitation of linear range and realize that any two sequences can calculate incidence degrees without blind areas and are widely used in association clustering, association evaluation, association decision-making and play an extremely important role in traffic signal information processing, energy development, mineral mining, plant breeding and other aspects.…”