研究生: |
陳建傑 |
---|---|
論文名稱: |
FEXP模式錯誤假設下之長距相關推論 Long Memory Inference Using FEXP Model Under Model Misspecification |
指導教授: | 徐南蓉 |
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: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 34 |
中文關鍵詞: | 長距相關時間序列 、FEXP模式 、Lasso |
相關次數: | 點閱:2 下載:0 |
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本論文的目的是比較兩種建模的方法在FEXP模式錯誤給定之下,後續統計推論結果的表現。所考慮的兩種方法建模方法分別是以Lasso搭配CV準則,及OLS搭配CP準則來選擇模型。後續推論的比較則是使用三種準則來比較兩種建模的方法下,參數估計與模型選擇的表現。第一種準則直接比較長距相關參數估計量的MSE;第二種準則為在time domain下,比較一期預測的PMSE;第三種準則為在frequency domain下,以MISE做為評比準則。藉由模擬結果得知,長記憶時間序列模式以Lasso搭配CV的方法所選出的模型有較好的推論結果。
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