Grey Systems: Theory and Application: Volume 11 Issue 1

Study on mechanism and filter efficacy of AGO/IAGO in the frequency domain

Changhai Lin, Zhengyu Song, Sifeng Liu, Yingjie Yang, Jeffrey Forrest

The purpose of this paper is to analyze the mechanism and filter efficacy of accumulation generation operator (AGO)/inverse accumulation generation operator (IAGO) in the…

Forecasting the price trends of digital currency: a hybrid model integrating the stochastic index and grey Markov chain methods

Ming-Huan Shou, Zheng-Xin Wang, Dan-Dan Li, Yi-Tong Zhou

Since the issuance in 2009, the digital currency has enjoyed an increasing popularity and has become one of the most important options for global investors. The purpose of this…

Bankruptcy prediction using multivariate grey prediction models

Yi-Chung Hu, Peng Jiang, Hang Jiang, Jung-Fa Tsai

In the face of complex and challenging economic and business environments, developing and implementing approaches to predict bankruptcy has become important for firms. Bankruptcy…

Application of grey clusters in the development of a Synthetic Model of the goals of Polish family enterprises' successors

Ewa Więcek-Janka, Joanna Majchrzak, Magdalena Wyrwicka, Gerhard Wilhelm Weber

The knowledge of goals of the successor, who is preparing to take over the business, is extremely important for the succession process and further operation of a family…

Crude oil price prediction based on LSTM network and GM (1,1) model

Tianxiang Yao, Zihan Wang

According to the problem of crude oil price forecasting, the purpose of this paper is to propose a multi-step prediction method based on the empirical mode decomposition, long…

Single machine earliness/tardiness scheduling problem with grey processing times and the grey common due date

Oğuzhan Ahmet Arık

This paper presents a mixed-integer programming model for a single machine earliness/tardiness scheduling problem where the objective is to minimize total earliness/tardiness…

Grey linear programming: a survey on solving approaches and applications

Davood Darvishi, Sifeng Liu, Jeffrey Yi-Lin Forrest

The purpose of this paper is to survey and express the advantages and disadvantages of the existing approaches for solving grey linear programming in decision-making problems.

Multicharacteristics optimization of electrical discharge micro hole drilling in Mg alloy using hybrid approach of GRA–regression–PSO

Neeraj Ahuja, Uma Batra, Kamal Kumar

Magnesium alloys are becoming prominent as an alternative to the permanent biomedical implants. In present work, electric discharge drilling (EDD) process has been investigated…

Integrated Taguchi-GRA-PCA for optimising the heat transfer performance of nanofluid in an automotive cooling system

Mohd Seraj, Syed Mohd Yahya, Mohd Anas, Agung Sutrisno, Mohammad Asjad

In the present study, the thermal performance of engine radiator using conventional coolant and nanofluid is determined experimentally for the different flow rates. Further, the…

Pattern classification using tolerance rough sets based on non-additive grey relational analysis and DEMATEL

Peng Jiang, Wenbao Wang, Yi-Chung Hu, Yu-Jing Chiu, Shu-Ju Tsao

It is challenging to derive an appropriate tolerance relation for tolerance rough set-based classifiers (TRSCs). The traditional tolerance rough set employs a simple distance…

Research on the logistics development level and spatial differentiation in node city with gray target decision model

Wuyong Qian, Lizhen Wang, Jue Wang, Qianqian Chen

The purpose of this study is to master the development process and the construction effectiveness of backbone circulation network in an all-round way, formulate regional logistics…

A study of the grey relational model of interval numbers for panel data

Kedong Yin, Tongtong Xu, Xuemei Li, Yun Cao

This paper aims to deal with the grey relational problem of panel data with an attribute value of interval numbers. The grey relational model of interval number for panel data is…