| Helmert-WF(权因子)方差分量估计 |
| |
| 引用本文： | 吴晓清. Helmert-WF(权因子)方差分量估计[J]. 武汉大学学报 ( 信息科学版), 1992, 17(4): 1-10. |
| |
| 作者姓名： | 吴晓清 |
| |
| 作者单位： | 珠海市西区规划办公室 |
| |
| 摘 要： | 本文利用权因子(Weight Factor)概念阐述了Helmert-WF方差分量估计的原理,并给出了其相应的计算公式及其解域与可估的条件。文中从数学分析的观点指出了负方差存在的可能性及原因,而且还就Helmert-WF法与Helmert法的异同作了比较,指出了Helmert法中的某些缺陷与不足。算例对所给结论作了很好的印证。
|
| 关 键 词： | 权因子 Helmert-WF方差分量估计 负方差 |
| 收稿时间： | 1992-06-03 |
The Method of Helmert-Weight Factor of Variance Component Estimation |
| |
| Wu Xiaoqing. The Method of Helmert-Weight Factor of Variance Component Estimation[J]. Geomatics and Information Science of Wuhan University, 1992, 17(4): 1-10. |
| |
| Authors: | Wu Xiaoqing |
| |
| Affiliation: | Wu Xiaoqing |
| |
| Abstract: | This paper gives the method of Helmert-Weight Factor of Variance Component Estimation, and then, the formula, the condition that can be estimated are given too. In the view of mathematical analysis, it is possible that the negative variance exists and why it exists. In the same time, comparing the method of Helmert-WF with that of Helmert, the defect of Helmert method is pointed by a special mode. Given examples show the conclusions are correct. |
| |
| Keywords: | weight factor Helmert-WF variance component estimation negative variance |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《武汉大学学报(信息科学版)》浏览原始摘要信息 |
|
点击此处可从《武汉大学学报(信息科学版)》下载全文 |
