Research on pork price prediction based on improved support vector machine
Journal Title: 广东农业科学 - Year 2018, Vol 45, Issue 12
Abstract
"In view of the ""hog cycle"" phenomenon that frequently occurs in recent years, ""high-price and highrisk-to-kill farmers"", this paper attempts to use the integrated empirical modality method EEMD method to excavate the ""hog cycle"" of pork price fluctuations as a predictive length criterion, and introduces The genetic algorithm (GA) is used to optimize the performance parameters such as the penalty parameter C, kernel function g, and loss function p of the support vector machine (SVM) to further optimize the prediction performance of the SVM. The results showed that: Digging through the EEMD method can accurately dig out the ""hog cycle"" of pork prices; through the comparison of commonly used prediction models, the optimization performance of the support vector machine after optimization by the genetic algorithm is optimal and robust enough. Sex, and more suitable for short ""porcine cycle"" predictions. The GA-SVM model proposed in this paper helps to guard against the cyclical risks of pork price volatility and is a more scientific price forecasting tool. "
Authors and Affiliations
Bai-chen JIANG, Si-xi PENG
Identification of the pathogen causing leaf spot of Polyscias guifoylei in Guangzhou
"Leaf spot is a new disease of Polyscias guifoylei in Ghuangzhou, resulting in seriously economic loss of P. guifoylei. It’s occurrance rate was 10%-50%. In this study, the pathogen isolate FLT4 was obtained from disease...
Forecast of cold chain logistics demand for agricultural products in Beijing based on neural network
"In order to forecast the demand of agricultural products cold chain logistics caused by the consumption,this paper constructs an impact index system from six aspects of agricultural products supply,social economy,col...
Diversity of fruit quality characteristics in Noni(Morinda citrifolia L.) germplasm resources
Twelve quantitative traits including fruit weight,fruit length,fruit diameter,fruit shape index, edible ratio,juice content,soluble solids,titratable acidity content,ratio of solid acid,vitamin C,reducing sugar...
Effects of different culture medium on the growth of hybrid seeds of Phalaenopsis amabilis by aseptic seeding
"The effects of basic culture medium and organic additives on the germination,differentiation, seedling and rooting of different hybrid seeds of Phalaenopsis amabilis were investigated by vitro culture. The results dem...
Analysis of volatile components of the peel of four different pummelos cultivars from Meizhou by GC-MS
In the present study,the volatile components of essential oils of Jin pomelo,Shatian pomelo, Aolan pomelo,and Mi pomelo from Meizhou city,Guangdong province were analyzed by gas chromatographymass spectrometry( GC-...