研究生: |
宋珩箴 Heng-Chen Sung |
---|---|
論文名稱: |
長距相關小波模型的參數估計 Estimation for Long-Memory Wavelet Models |
指導教授: |
徐南蓉
Nan-Jung Hsu |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 統計學研究所 Institute of Statistics |
論文出版年: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 45 |
中文關鍵詞: | 長距相關 、小波 |
外文關鍵詞: | long memory, wavelet |
相關次數: | 點閱:2 下載:0 |
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本文利用小波係數的變異數將長距相關模型建構於小波域上,稱為長距相關小波模型,再利用最大概似估計法,EM演算法,貝氏分析法等方法來估計此模型的參數。透過模擬分析我們發現長距相關小波模型搭配最大概似估計法估計,普遍較GPH估計量的誤差小。在實證分析上我們利用長距相關小波模型來描述北半球月氣溫,其預測結果與ARFIMA模式相當。
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