Grey Systems: Theory and Application: Volume 12 Issue 2

A new seasonal cycle GM (1,1) model and its application in railway passenger volume forecasting

Huan Wang, Yuhong Wang, Dongdong Wu

To predict the passenger volume reasonably and accurately, this paper fills the gap in the research of quarterly data forecast of railway passenger volume. The research results…

Matrix form of interval multivariable gray model and its application

Sandang Guo, Yaqian Jing, Bingjun Li

The purpose of this paper is to make multivariable gray model to be available for the application on interval gray number sequences directly, the matrix form of interval…

Development of the GM(1,1,⊗b) model with a trapezoidal possibility function and its application

Shuliang Li, Ke Gong, Bo Zeng, Wenhao Zhou, Zhouyi Zhang, Aixing Li, Li Zhang

The purpose of this paper is to overcome the weakness of the traditional model, in which the grey action quantity is a real number and thus leads to a “unique solution” and to…

A novel fractional discrete nonlinear grey Bernoulli model for forecasting the wind turbine capacity of China

Wen-Ze Wu, Wanli Xie, Chong Liu, Tao Zhang

A new method for forecasting wind turbine capacity of China is proposed through grey modelling technique.

Simulation evaluation of small samples based on grey estimation and improved bootstrap

Wenguang Yang, Lianhai Lin, Hongkui Gao

To solve the problem of simulation evaluation with small samples, a fresh approach of grey estimation is presented based on classical statistical theory and grey system theory…

Digital-IIoTs spheres approach toward public development: an exploiting fuzzy-grey mathematical modeling of IIoTs spheres

Da Kang, M. Prabhu, Ramyar Rzgar Ahmed, Zhuo Zhang, Atul Kumar Sahu

In the present era, executives are shifting keenly toward industrial Internet of things (IIoTs) spheres. It is observed that IIoTs spheres become a key for each industry to grow…

A comprehensive G-Lz-ADC effectiveness evaluation model for the single communication satellite system in the context of poor information

Ruirui Shao, Zhigeng Fang, Liangyan Tao, Su Gao, Weiqing You

During the service period of communication satellite systems, their performance is often degraded due to the depletion mechanism. In this paper, the grey system theory is applied…

Two-stage multi-level equipment grey state prediction model and application

Qiang Li, Sifeng Liu, Saad Ahmed Javed

The purpose of this paper is to develop a new approach for equipment states prediction and provide a method for early warning of possible trouble states.

Data-driven structure selection for the grey NGMC(1,N) model

Dang Luo, Decai Sun

With the prosperity of grey extension models, the form and structure of grey forecasting models tend to be complicated. How to select the appropriate model structure according to…