比较模型中预测值的验证模型

比较模型中预测值的验证模型

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Contributor(s)

Initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
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Method-focused categoriesData-perspectiveGeostatistical analysis

Model Description

Chinese {{currentDetailLanguage}} Chinese

比较模型中预测值的验证模型

 

 (1)对于比较可供选择的各种模型的特别有用的统计量是Theil的不等式系数:

 

 

 

式中, 分别是系统的预测值和实际值。

 

(2)偏向部分:

 

 

 

式中, 是在观测值范围n+1m,预测值和实际数据序列的平均值。

 

(3)变化部分 :

 

 

 

式中,是在观测值范围n+1m中,预测值和实际数据序列的标准差。

 

(4)协方差部分:

 

 

 

式中, 是在观测值范围n+1m,预测值和实际数据序列的相关系数。

 

(5) Janus(J)是一个对模型预测精确性的有用的测度,它也能指示模型结构是否需要改变,可表达为:

 

 

 

参考资料

Power M:生态和环境模型预测值的验证。Ecological Modelling,1993, 68

How to Cite

《资源环境数学模型手册》 (2018). 比较模型中预测值的验证模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/c1a2d867-d337-4230-86dd-3bceaa0fe908
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History

Last modifier : 
wu kai
Last modify time : 
2020-12-18
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Contributor

Initial contribute: 2018-12-04

Co-contributor(s)

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
wu kai
Last modify time : 
2020-12-18
Modify times : 
View History

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