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《Developments In Surveying and Mapping》 2001-01
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On the Window-width in Information Spread Estimation

WANG Xin-zhou,YOU Yang-sheng(Wuhan University,Wuhan,540079)  
Information spread estimation (ISE) not only has fine robustness, but also it is very simple and convenient for application. However, the estimation of the density function depends on the window-width. If the best estimation result is wanted to obtain, the optimum window-width must be choosen. How to acquire the optimum window-width is undoubtedly one of the most difficult problem in information spread estimation, and one of the most important factors influencing the precision in the estimation. Based on a detailed study in the nature of big samples in normal information spread estimation,this paper presents a theory and algorithm on how to acquire the optimum window-width . Then the problem of how to choose the optimum window-width has been successfully solved.
【Fund】: 国家自然科学基金资助项目! (4 98740 0 2 );; 国家测绘局测绘科技发展基金资助项目! (990 10 )
【CateGory Index】: O212
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