湖南农业科学
湖南農業科學
호남농업과학
HUNAN AGRICULTURAL SCIENCES
2014年
16期
62-64
,共3页
猪肉%需求量%BP神经网络%预测
豬肉%需求量%BP神經網絡%預測
저육%수구량%BP신경망락%예측
pork%dem and%back propagation neuralnetw ork%prediction
近年来,由于猪肉安全事故和供求关系等因素的影响,导致猪肉市场价格波动大,养猪业难以持续稳定发展。科学预测猪肉需求量,对科学指导生猪生产和宏观调控猪肉市场价格意义重大。笔者根据历年数据,采用BP神经网络预测方法,实现在MATLAB中运行,通过对模型的多次训练,选择隐层神经元数目为6个,达到了期望效果。预测结果表明,2012~2016年,我国人均猪肉需求量分别为34.10、38.12、38.66、40.28和40.60 kg/a。
近年來,由于豬肉安全事故和供求關繫等因素的影響,導緻豬肉市場價格波動大,養豬業難以持續穩定髮展。科學預測豬肉需求量,對科學指導生豬生產和宏觀調控豬肉市場價格意義重大。筆者根據歷年數據,採用BP神經網絡預測方法,實現在MATLAB中運行,通過對模型的多次訓練,選擇隱層神經元數目為6箇,達到瞭期望效果。預測結果錶明,2012~2016年,我國人均豬肉需求量分彆為34.10、38.12、38.66、40.28和40.60 kg/a。
근년래,유우저육안전사고화공구관계등인소적영향,도치저육시장개격파동대,양저업난이지속은정발전。과학예측저육수구량,대과학지도생저생산화굉관조공저육시장개격의의중대。필자근거력년수거,채용BP신경망락예측방법,실현재MATLAB중운행,통과대모형적다차훈련,선택은층신경원수목위6개,체도료기망효과。예측결과표명,2012~2016년,아국인균저육수구량분별위34.10、38.12、38.66、40.28화40.60 kg/a。
Now the pig industry in China is facing w ith many kinds of risks such as epidem ic disease, food security and m arket risk. Especially the m arketrisk influencesthe pig industry deeply, resulting in the pork price fluctuations.The scientific forecastofpork dem and can offer accurate inform ation on pork quantity dem anded, w hich is of significance to the macro-control of pig industry. A ccording to the related data over recent years, the back propagation neural netw ork m ethod is used in MATLAB to distinguish com plicated nonlinearity system characteristics, w ith high-speed self-study and self-adaption ability;and the per capita dem and for pork is 38.66kg, 40.27kg or 40.59kg in future three years,respectively.