| 研究生: |
張嘉璁 |
|---|---|
| 論文名稱: |
變數轉換之穩健迴歸分析 |
| 指導教授: | 鄭宗記 |
| 學位類別: |
碩士
Master |
| 系所名稱: |
商學院 - 統計學系 Department of Statistics |
| 論文出版年: | 2001 |
| 畢業學年度: | 89 |
| 語文別: | 中文 |
| 論文頁數: | 14 |
| 中文關鍵詞: | Box-Cox乘冪轉換 、前進演算法 、最小中位數平方法 、最小消去平方法 、分數統計量 、穩健迴歸 、損壞點 、離群值 |
| 外文關鍵詞: | Box-Cox power transformation, Forward search algorithm, Least median of squares, Least trimmed squares, Score statistic, Robust regression, Breakdown point, Outliers |
| 相關次數: | 點閱:169 下載:104 |
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在傳統的線性迴歸分析當中,當基本假設不滿足時,有時可考慮變數轉換使得資料能夠比較符合基本假設。在眾多的轉換方法當中,以Box和Cox(1964)所提出的乘冪轉換(Box-Cox power transformation)最為常用,乘冪轉換可將某些複雜的系統轉換成線性常態模式。然而當資料存在離群值(outlier)時,Box-Cox Transformation會受到影響,因此不是一種穩健方法。
在本篇論文當中,我們利用前進演算法(forward search algorithm)求得最小消去平方估計量(Least trimmed squares estimator),在過程當中估計出穩健的轉換參數。
封面頁
證明書
論文摘要
1.前言
2.變數轉換
3.穩健迴歸估計
4.實例分析
5.結論與後續研究
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