scholarly journals Generalized fractional grey system models: The memory effects perspective

Author(s):  
Wanli Xie ◽  
Wen-Ze Wu ◽  
Chong Liu ◽  
Mark Goh
2017 ◽  
Vol 7 (2) ◽  
pp. 259-271 ◽  
Author(s):  
Medha Pirthee

Purpose The purpose of this paper is to understand the trend and forecast the number of tourists from different regions of the world to Mauritius. Design/methodology/approach The paper adopts two grey system models, the even model GM(1,1) and the non-homogeneous discrete grey model (NDGM), to forecast the total number of international tourism to Mauritius and its structure from different regions tourist arrivals to Mauritius for the next three years. Grey system theory models were used to account for uncertainties and the dynamism of the tourism sector environment. The two models were applied as a comparison to obtain more reliable forecasting figures. Findings The results demonstrate that both of the grey system models can be successfully applied with high accuracy for Mauritian tourism prediction, and also the number of tourist arrivals to Mauritius shows a continued augmentation for the upcoming years. Practical implications Forecasting is meaningful since the Government of Mauritius, private companies or any concerned authority can adopt the forecasting methods exposed in this paper for the development of the tourism sector through managerial and economic decision making. Originality/value Mauritius is a charming travel destination. Through this paper, it can be seen that future tourism travel to Mauritius has been successfully predicted based on previous data. Moreover, it seems that the grey system theory models have not been utilised yet as forecasting tools for the tourism sector of Mauritius as opposed to other countries such as China and Taiwan.


2013 ◽  
Author(s):  
Liu Sifeng ◽  
Forrest Jeffrey ◽  
Yang Yingjie
Keyword(s):  

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
De-Yi Ma ◽  
Jian-Lin Li

For the small sample poor information, grey model is one of the good forecasting models. However, the simulation curve of original data is not consistent with that of the data by translations. In this paper, we present two novel grey system models, that is, generalized grey model and generalized discrete grey model. Compared with grey model, we prove that the simulation curve of original data is consistent with that of the new data by translations for the novel grey model, which was also demonstrated by the results of practical numerical examples.


2021 ◽  
pp. 114972
Author(s):  
Gurcan Comert ◽  
Negash Begashaw ◽  
Nathan Huynh
Keyword(s):  

2013 ◽  
Vol 409-410 ◽  
pp. 1098-1101
Author(s):  
Jian Hu Zheng

The complexity of modern economic system makes the forecast about correlated variable more difficult. Combined grey system models with general grey forecasting method and grey verhulst forecasting method are utilized to overcome the forecast issues under certain and uncertain changing trends. The results indicate that the forecast accuracy is high and short-term forecasts are available, which supports the methodological applicability and robustness.


2019 ◽  
Vol 42 (3) ◽  
pp. 915-931
Author(s):  
Huaping Sun ◽  
Jingjing Jiang ◽  
Muhammad Mohsin ◽  
Jijian Zhang ◽  
Yasir Ahmed Solangi

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