| The Further Development and Application of Grey Forecasting Model |
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| 作者姓名： | LINChun－yan |
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| 作者单位： | LIN Chun-yanDepartment of Mathematics，Dalian University of Technology，Dalian 116024，China |
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| 基金项目： | This work is supported by National Natural Science Foundation of China (198710 4 9) |
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| 摘 要： | 1 IntroductionChen2 ] has done the transformation for original sequence { x(0 ) ( k) } by logarithmic func-tion,and then raised the smooth degree of discrete data,and hence expanded the appliedrange of grey forecasting models.Chen2 ] compared the mean error in two cases for fore-casting output of TV′s in whole country,it is2 6 3.16 % before transformation,and it is2 3.6 % after transformation.The key raising the accuracy of grey forecasting is strengthening smooth grade of o-riginal sequ…
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| 关 键 词： | 灰度预测模型 近一步发展 功能函数变换 |
The Further Development and Application of Grey Forecasting Model |
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| LIN Chun-yan.The Further Development and Application of Grey Forecasting Model[J].Journal of Systems Science and Systems Engineering,2002,11(3):302-305. |
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| Authors: | LIN Chun-yan |
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| Institution: | Department of Mathematics, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | In this paper, the method which forecasts original sequences {x (0)(k)} with logarithmic function or with power function has been complemented, and the method which handles original sequences by logarithmic function-power function transformation or by power function-logarithmic function transformation has been presented, then smooth degree and precision of forecasting of discrete data have been improved. |
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| Keywords: | grey forecasting power function transformation logarithmic function-power function transformation power function-logarithmic function transformation |
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