... COVID-19 Grey prediction model Power index of non-linear correction term National Natural Science Foundation of China Grant Nos.72071023 http://dx.doi.org/10.13039/501100001809 National Natural Science Foundation of China Grant Nos.72561025 http://dx.doi.org/10.13039/501100001809...

... Pension insurance fund forecast Grey prediction model Nonlinear grey Bernoulli model Recursive least squares Memory factor National Social Science Fund of China 21BGL302 http://dx.doi.org/10.13039/501100012456 Funding: The research was funded by the National Social Science Fund...

... Emerald Publishing Limited Licensed re-use rights only Shuliang Li can be contacted at: lsl@ctbu.edu.cn Grey prediction model Differentiated fractional order Interaction effect New energy vehicle quarterly sales forecast the National Social Science Found of China 24BTJ063...

... exponential smoothing model Grey prediction model The global population has been experiencing an unprecedented rapid demographic transition. According to the predictions based on the Asian region, the aging population will increase rapidly by 314% from 207 million in 2007 to 857 million in 2050...

... Province. Then, the famous Gompertz differential equation can be expressed as follows: (3) d x d t + p x = q x ⁡ ln ⁡ x Population aging Aged population Population prediction Grey prediction model Fractional-order discrete grey model The population...

... 2022 © Emerald Publishing Limited 2022 Emerald Publishing Limited Licensed re-use rights only Grey prediction model TDDGM(1,1,t^{α) Genetic algorithm Solar power generation volume In order to cope with global warming, it is imperative to promote the transition}...

...@163.com 25 07 2020 21 10 2020 03 01 2021 11 01 2021 © Emerald Publishing Limited 2021 Emerald Publishing Limited Licensed re-use rights only Grey prediction model Interval grey numbers Genetic algorithm Recursive iteration Residual modification Soft...

... of the grey system theory, the grey prediction models have attracted significant attention in the research of modeling methods. Researchers have proposed discrete modeling methods (Xie and Liu, 2005 , 2009 ; Luo and Wei, 2019), optimization methods of buffer operators (Cui et al., 2009 ; Xu et...

... takes these variables into consideration, solves the practical problem and expands the grey system theory and the grey prediction method system, which improves the accuracy of grey prediction model. This paper's main interest is to estimate and forecast EI by considering the influence of government...

... 2018 Emerald Publishing Limited Licensed re-use rights only Grey system theory Grey prediction model Grey discrete model Multiple transformation In the early 1980s, professor Deng Julong, a Chinese scholar, proposed grey systems theory (grey theory). This theory takes “partial...

... and statistics. Searches were done using two variant keywords combinations: “grey relational analysis” (and also “gray relational analysis”) and “grey prediction model” (“gray prediction model”) starting with early years of grey systems theory till 2014. An additional search has been done in the ISI WoS...

... Group Publishing Limited 2013 Grey systems Supply chain management Modelling Predictive process Practical applications of grey models Multi‐objective programming Simulation optimization Grey prediction model Along with the growth of information technology and globalization...

...Yuhong Wang; Jiangrong Tang; Wenbin Cao Purpose The purpose of this paper is to make an evaluation and early warning prediction using grey prediction models and the index of process ability. Design/methodology/approach An early warning prediction for food security risk is proposed...