| 研究生: |
紀宛汝 Chi, Wan Ju |
|---|---|
| 論文名稱: |
單因子模型下信用損失分配尾端機率估計與合成型擔保債務憑證評價 Estimating Tail Probability of Credit Loss Distribution and Pricing CDOs with One Factor Copula Model |
| 指導教授: |
劉惠美
Liu, Hui Mei |
| 學位類別: |
博士
Doctor |
| 系所名稱: |
商學院 - 統計學系 Department of Statistics |
| 論文出版年: | 2014 |
| 畢業學年度: | 102 |
| 語文別: | 中文 |
| 論文頁數: | 38 |
| 中文關鍵詞: | 關聯結構 、重點抽樣方法 、合成型擔保債務憑證 、封閉偏斜常態分配 |
| 外文關鍵詞: | Copula model, Importance sampling method, Collateralized debt obligation, Closed skew normal distribution |
| 相關次數: | 點閱:20 下載:0 |
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本文利用Bassamboo et al. (2008)提出有極值相依的t關聯結構模型,結合Chiang et al. (2007)所提出之重點抽樣方法,延伸出兩種估計信用損失分配尾端損失機率之重點抽樣方法,結果顯示模擬速度迅速,且其變異數縮減表現良好。另外,在評價合成型擔保債務憑證方面,由於在Kalemanova (2007)中,常態逆轉高斯模型對於擔保債務憑證之高級等級有良好的估計,本文提出利用封閉偏斜常態分配與常態逆轉高斯分配之混合分配對合成型擔保債務憑證做評價,其評價結果表現優異,較常態逆轉高斯模型表現更好。
摘 要 3
Abstract 4
第一章 緒論 5
第二章 文獻探討 7
第一節 關聯結構 7
第二節 重點抽樣方法 9
第三節 擔保債務憑證之評價 10
第三章 信用損失分配尾端機率估計 12
第一節 模型及重點抽樣方法 12
第二節 數值結果 18
第四章 合成型擔保債務憑證評價 20
第一節 合成型擔保債務憑證之介紹 20
第二節 損失分配與和擔保債務憑證之信用價差 21
第三節 模型介紹 23
第四節 數值結果與結論 31
第五章 結論 36
參考文獻 37
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