Treffer: 非洲猪瘟影响猪肉价格动态的大数据分析实验设计.

A comprehensive mathematical experiment project on big data analysis of pork price dynamics affected by African Swine Fever has been designed. Firstly, a corpus of public opinion on African Swine Fever has been established by using a web crawler and text mining techniques, an African Swine Fever public opinion index has been constructed by integrating an LDA topic model, machine learning sentiment classification algorithm, and TF-IDF weighting algorithm, a VAR model of pork price and public opinion index has been established, and Grange causality test, impulse response analysis, and variance decomposition analysis have been conducted. The results show that there is an impact and influence of the African Swine Fever epidemic on pork price, which is the Grange cause of pork price fluctuation, and there is a difference in the size of the impact on pork price in different periods. The experimental design covers the mining techniques of textual big data, Python programming, construction and interpretation of VAR models, animal epidemic, pig breeding, agricultural economics, etc. It is beneficial to improve students’ ability to synthesize multiple analytical tools and statistical knowledge to solve practical problems in a big data environment. [ABSTRACT FROM AUTHOR]

该文设计了非洲猪瘟影响猪肉价格动态的大数据分析综合数学实验项目。首先运用网络爬虫和文本 挖掘技术建立了非洲猪瘟舆情语料库，综合运用 LDA 主题模型、机器学习情感分类算法和 TF-IDF 权重算法 构建了非洲猪瘟舆情指数，建立了猪肉价格与舆情指数的 VAR 模型，并对其进行了 Grange 因果关系检验、 脉冲响应分析和方差分解分析。结果表明，非洲猪瘟疫情对猪肉价格存在冲击和影响，是猪肉价格波动的 Grange 原因，且不同时期对猪肉价格的冲击大小存在差异。该实验设计涵盖了文本大数据的挖掘技术、Python 编程、VAR 模型的构建与解释、动物疫情、生猪养殖和农业经济学等，有益于提高学生在大数据环境下综合 运用多种分析工具和统计知识解决实际问题的能力. [ABSTRACT FROM AUTHOR]

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management Editorial Office and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)