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自回归求和移动平均模型在埃及牛奶产量预测中的应用(2022-2025 年)。

The usage of the autoregressive integrated moving average model for forecasting milk production in Egypt (2022-2025).

机构信息

Veterinary Economic and Farm Management, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.

出版信息

Open Vet J. 2024 Jan;14(1):256-265. doi: 10.5455/OVJ.2024.v14.i1.22. Epub 2024 Jan 31.

Abstract

BACKGROUND

Milk is considered one of the most important capital goods and essential sources of animal protein in the diet of the Egyptian family, as well as an effective means to improve the economic condition of farmers, considering this important view, the policymakers need accurate and advance information regarding future supply for planning on the both short and long term.

AIM

The study aims to forecast the production of milk in Egypt during the period from 2022 to 2025 using the Autoregressive Integrated Moving Average (ARIMA) model using time series data of milk production (MP) (1970-2021) obtained from the Central Agency for public mobilization and statistics (CAPMS).

METHODS

Augmented Dickey-Fullar Unit Root test, Partial autocorrelation function (PACF), and Autocorrelation function (ACF) of the time series sequence were used to judge the stationarity of the data. After confirming the stationarity of the data, the appropriate ARIMA model was selected based on certain statistical parameters like significant coefficients, values of adjusted -squared, Akaike information criteria (AIC), Schwarz criterion (SC), and Standard Error of Regression. After the selection of the model based on the previous parameters, the verification of the model was employed by checking the residuals of the Correlogram--Statistics test.

RESULTS

The most fitted model to predict the future levels of MP in Egypt was ARIMA .

CONCLUSION

Using the ARIMA (1, 1, 3) model, it could be forecasted that the production of milk in Egypt would show an increasing trend from 6,152.606 thousand tons in 2022 to 6,360.829 thousand tons in 2025.

摘要

背景

牛奶被认为是埃及家庭饮食中最重要的资本品和动物蛋白质的主要来源之一,也是提高农民经济状况的有效手段,考虑到这一重要观点,决策者需要有关未来供应的准确和先进信息,以便进行短期和长期规划。

目的

本研究旨在使用时间序列数据(1970-2021 年),使用自回归综合移动平均(ARIMA)模型预测 2022 年至 2025 年埃及的牛奶产量。该数据来自中央公共动员和统计局(CAPMS)。

方法

使用时间序列序列的增广 Dickey-Fuller 单位根检验、偏自相关函数(PACF)和自相关函数(ACF)来判断数据的平稳性。在确认数据平稳后,根据显著系数、调整平方值、Akaike 信息准则(AIC)、施瓦茨准则(SC)和回归标准误差等某些统计参数选择合适的 ARIMA 模型。在基于上述参数选择模型后,通过检查相关图-统计检验的残差来验证模型。

结果

最适合预测埃及未来牛奶产量水平的模型是 ARIMA 。

结论

使用 ARIMA(1,1,3)模型,可以预测埃及的牛奶产量将从 2022 年的 6152.606 千吨增加到 2025 年的 6360.829 千吨。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/95f6/11018426/638b6b57aded/OpenVetJ-14-256-g001.jpg

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