| 最优化因子处理及加权多重回归模型 |
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| 引用本文： | 汤志成,孙涵.最优化因子处理及加权多重回归模型[J].气象学报,1992,50(4):514-517. |
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| 作者姓名： | 汤志成 孙涵 |
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| 作者单位： | 江苏省气象科学研究所，江苏省气象科学研究所 南京 210008，南京 210008 |
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| 摘 要： | 因子的优劣是回归分析的关键。故在建立回归方程时,一般除对预报因子进行直线相关普查外,还要进行非线性相关普查。如将原因子x用x~(-1)、x~(1/2)、x~2 、e~x、In x等函数形式进行变换。但由于这些函数形式有限,故不一定能找到最优的表达形式;为此冯耀煌等仅给出了x~a和e~(ax)两种通式,其中a为待
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| 收稿时间： | 1989/11/14 0:00:00 |
| 修稿时间： | 1990/12/1 0:00:00 |
THE OPTIMAL TRANSFORMATION OF PREDICTOR AND WEIGHTED MODEL OF MULTI-REGRESSION |
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| Tang Zhicheng and Sun Han.THE OPTIMAL TRANSFORMATION OF PREDICTOR AND WEIGHTED MODEL OF MULTI-REGRESSION[J].Acta Meteorologica Sinica,1992,50(4):514-517. |
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| Authors: | Tang Zhicheng and Sun Han |
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| Institution: | Jiangsu Research Institute of Meteorological Science, Nanjing, 210008;Jiangsu Research Institute of Meteorological Science, Nanjing, 210008 |
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| Abstract: | By discussing the relationship between predictor and predictand (i.e.yield) in yield prediction,the basic form of linear and nonlinear transformation of predictor was summed up.The calculation method of parameter in the form was given out,based on the principles of optimization method,and at the same time the optimal predictors were selected.In addtion,the weighted model of multiregression for yield prediction was established,based on the stage of plant. |
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