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• W4387096105 abstract "Increasing geopolitical conflicts, extreme weather and other emergencies are continuously affecting global agriculture and food systems, threatening national and regional food security. Therefore, it is particularly important to accurately predict national or regional grain demand. In this paper, a novel fractional discrete dynamic multivariate grey model is proposed to predict grain demand. Based on the discrete modelling idea, the model considers the impacts of the change trend of the related factor sequences, adds the linear correction term and the random disturbance term, and applies the fractional order accumulation strategy, which improves the accuracy and robustness. An algorithm based on sailfish optimizer is introduced to optimize the fractional order accumulation parameter of the model. Taking the Yangtze River Economic Belt as an example, the fitting and prediction results of the novel and the existing three models are compared. The novel model can better fit and predict the demand for staple and feed grain, which is superior compared to other models. The predictions show that demand for staple food and urban feed grain in the Yangtze River Economic Belt will increase to varying degrees, while rural feed grain demand will remain stable overall. This paper will help the government to better grasp the changes in the structure and quantity of staple food and feed grain demand in the Yangtze River Economic Belt and formulate efforts to ensure food security." @default.
• W4387096105 created "2023-09-28" @default.
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• W4387096105 date "2024-01-01" @default.
• W4387096105 modified "2023-10-16" @default.
• W4387096105 title "Prediction of demand for staple food and feed grain by a novel hybrid fractional discrete multivariate grey model" @default.
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• W4387096105 doi "https://doi.org/10.1016/j.apm.2023.09.026" @default.
• W4387096105 hasPublicationYear "2024" @default.
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