... at: kapilar@appsc.sab.ac.lk , kapila.tr@gmail.com 07 12 2025 03 03 2026 08 05 2026 23 06 2026 © Emerald Publishing Limited 2026 Emerald Publishing Limited Licensed re-use rights only GM(1,1) Grey Verhulst model Tea yield forecast Linear autocorrelation structure...

..., this study employs the DEA-based Malmquist Productivity Index (MPI). This analysis provides a basis for forecasting future performance. Subsequently, the Grey system theory - first-order and one-variable model GM(1,1) is applied to project the business results of these companies from 2024 to 2027, utilizing...

...Wenguang Yang; Lanxiang Yi; Meiling Chen Purpose The main goal of this improvement is to enhance the prediction accuracy of GM(1,1) model to facilitate its application in the prediction of emergency material demands and enhance the existing GM(1,1) by incorporating the Gauss–Hermite integral...

... condition monitoring systems with similar irreversible degradation behaviors before failure occurs, such as aircraft engines and centrifugal pumps. Originality/value This paper introduces the similarity information into traditional GM(1,1) model to make it more suitable for long-term RUL prediction...

... 2020 01 07 2020 07 07 2020 © Emerald Publishing Limited 2020 Emerald Publishing Limited Licensed re-use rights only Grey system Riccati equation Discrete grey model GM(1,1) Grey Riccati model Grey system theory (Deng, 1982) was proposed in 1982. It is mainly used...

... and present. These modelling approaches are particularly complicated when the available resources are limited as well as anomalous. The purpose of this paper is to propose a new hybrid forecasting approach based on unbiased GM(1,1) and artificial neural network (UBGM_BPNN) to forecast time series patterns...