Grey Systems: Theory and Application: Volume 14 Issue 4

Damping accumulative NDAGM(1,N, α) power model and its applications

Ye Li, Chengyun Wang, Junjuan Liu

In this essay, a new NDAGM(1,N,α) power model is recommended to resolve the hassle of the distinction between old and new information, and the complicated nonlinear traits between…

The grey decision model and its application based on generalized greyness of interval grey number

Li Li, Xican Li

In order to solve the decision-making problem that the attributive weight and attributive value are both interval grey numbers, this paper tries to construct a multi-attribute…

Forecasting hospital outpatient volume using an optimized medical two-stage hybrid grey model

Youyang Ren, Yuhong Wang, Lin Xia, Wei Liu, Ran Tao

Forecasting outpatient volume during a significant security crisis can provide reasonable decision-making references for hospital managers to prevent sudden outbreaks and dispatch…

Improving electricity demand forecasting accuracy: a novel grey-genetic programming approach using GMC(1,N) and residual sign estimation

Flavian Emmanuel Sapnken, Benjamin Salomon Diboma, Ali Khalili Tazehkandgheshlagh, Mohammed Hamaidi, Prosper Gopdjim Noumo, Yong Wang, Jean Gaston Tamba

This paper addresses the challenges associated with forecasting electricity consumption using limited data without making prior assumptions on normality. The study aims to enhance…

Organizational culture’s influence on supply chain performance analysis with fuzzy grey cognitive maps

Lucas Gabriel Zanon, Tiago F.A.C. Sigahi, Rosley Anholon, Luiz Cesar Ribeiro Carpinetti

This paper applies fuzzy grey cognitive maps (FGCM) to support multicriteria group decision making (GDM) on supply chain performance (SCP) considering the role of organizational…

Symmetric Kullback–Leibler distance based generalized grey target decision method for mixed attributes

Jinshan Ma, Hongliang Zhu

The reported Kullback–Leibler (K–L) distance-based generalized grey target decision method (GGTDM) for mixed attributes is an asymmetric decision-making basis (DMB) that does not…

What kind of urban brand ecology attracts talent best? Grey configuration analysis of 98 Chinese cities

Zhaohu Dong, Peng Jiang, Zongli Dai, Rui Chi

Talent is a key resource for urban development, and building and disseminating urban brands have an important impact on attracting talent. This paper explores what kind of urban…

On some operations on grey graphs with application

Mohammed Atef, Sifeng Liu

The objective of this paper is to formulate the precise meanings of grey graphs and examine some of their properties.

A grey target performance evaluation model for aeroengine pressure test bench

Yanhua Zhang, Kaixin Ying, Jialin Zhou, Yuehua Cheng, Chenghui Xu, Zhigeng Fang

This paper aims to optimize the air pressure regulation scheme of the aeroengine pressure test bench.

Grey relations

Mohammed Atef, Sifeng Liu

The goal of this article is to introduce the notion of a grey relation between grey sets using grey numbers.

A directed grey incidence model based on panel data

Yanli Zhai, Gege Luo, Dang Luo

The purpose of this paper is to construct a grey incidence model for panel data that can reflect the incidence direction and degree between indicators.