Construction of an Early-Warning System for Vegetable Prices Based on Index Contribution Analysis

Youzhu Li, Jingbo Xia, Chongguang Li and Mingyang Zheng
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Youzhu Li: College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China
Jingbo Xia: College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
Chongguang Li: College of Economics and Management, Huazhong Agricultural University, Wuhan 430070, China
Mingyang Zheng: College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China

Sustainability, 2015, vol. 7, issue 4, 1-15

Abstract: An early-warning indicator screening method is proposed in order to construct an early-warning system for vegetable prices. Through index contribution analysis and the application of a support vector regression algorithm, we compare the results of early warning before and after index optimization. Experimental results show that the proposed early-warning system was significantly improved after indicator optimization by using index contribution analysis.

Keywords: early warning; vegetable prices; SVR; index contribution analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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