| 基于偏最小二乘回归的投影寻踪耦合模型在参考作物腾发量预测中的应用 |
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| 引用本文： | 迟道才,曲霞,刘婷婷,陈伟,王海南. 基于偏最小二乘回归的投影寻踪耦合模型在参考作物腾发量预测中的应用[J]. 中国农村水利水电, 2011, 0(2) |
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| 作者姓名： | 迟道才 曲霞 刘婷婷 陈伟 王海南 |
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| 作者单位： | 沈阳农业大学水利学院,沈阳,110866 |
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| 摘 要： | 根据朝阳气象站的实测气象数据(温度、湿度、日照时数、风速、蒸发量、降水量),提出基于偏最小二乘回归的投影寻踪耦合模型用于预测朝阳地区参考作物滕发量.偏最小二乘回归方法能够有效地处理自变量间多重线性相关问题,但对处理因变量与自变量间复杂的非线性问题较差,而投影寻踪回归模型有效解决了非线性问题.把这2种方法结合在一起,建立了基于偏最小二乘回归的投影寻踪耦合模型,用于该地区参考作物滕发量的预测.并将耦合模型预测的ET0结果与Penman-Monteith公式计算的ET0结果进行比较,该耦合模型预测精度较高.
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| 关 键 词： | 偏最小二乘回归 投影寻踪 耦合模型 参考作物腾发量 腾发量预测 |
Projection Pursuit Based on PLS in Prediction of Reference Crop Evaporation |
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| CHI Dao-cai , QU Xia , LIU Ting-ting , CHEN Wei , WANG Hai-nan. Projection Pursuit Based on PLS in Prediction of Reference Crop Evaporation[J]. China Rural Water and Hydropower, 2011, 0(2) |
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| Authors: | CHI Dao-cai QU Xia LIU Ting-ting CHEN Wei WANG Hai-nan |
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| Affiliation: | CHI Dao-cai,QU Xia,LIU Ting-ting,CHEN Wei,WANG Hai-nan(College of Water Conservancy,Shenyang Agricultural University,Shenyang 110866,China) |
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| Abstract: | According to the meteorological data obtained by Chaoyang Weather Station(temperature,humidity,sunshine duration,wind speed,evaporation,precipitation) and the coupling model of projection pursuit based on partialeast-square regression used to predict the reference crop evaporation of Chaoyang City.The method of partial east-squares regression can effectively deal with the problem of multicollinearity among independent variable,but can not ideally solve the complicated problem of nonlinearity between depende... |
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| Keywords: | partialeast-squares regression projection pursuit coupling model reference crop evaporation evaporation predict |
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