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系統識別號 U0002-0106200701411300
中文論文名稱 短期利率動態調整之實證研究
英文論文名稱 An Empirical Comparison of Alternative Models of The Short-Term Interest Rate Dynamics.
校院名稱 淡江大學
系所名稱(中) 財務金融學系碩士班
系所名稱(英) Department of Banking and Finance
學年度 95
學期 2
出版年 96
研究生中文姓名 龍思筠
研究生英文姓名 Shih-Yun Lung
學號 694490557
學位類別 碩士
語文別 中文
口試日期 2007-05-20
論文頁數 70頁
口試委員 指導教授-李命志
委員-邱建良
委員-王凱立
委員-鄭婉秀
中文關鍵字 短期利率  非線性  GARCH  水準效果  GED 
英文關鍵字 Short-term interest rate,  Nonlinearity,  GARCH 
學科別分類 學科別社會科學商學
中文摘要 本研究利用美國三個月期國庫券利率與財務上短期利率模型來探討實際經濟社會短期利率之動態調整過程,並且考慮含有非常態誤差項的GARCH模型以捕捉隨時間變化的波動性和不連續利率移動的潛在影響。研究過程中使用最大概似估計法進行參數之估計與執行相關的模型檢定,試圖透過估計找出最佳實證配適效果之利率模型。本研究認為估計利率模型時單純採用非線性漂浮項設定並不恰當,因為實證結果發現不同的變異項型態與誤差分配的設定皆可能改變利率模型中對於非線性漂浮項的必要性,例如:非線性變異項之利率模型會降低模型中對於非線性漂浮項的需求。此外,本文實證結果顯示當模型中同時考慮水準效果並且假設誤差項服從GED分配之GARCH模型後,其利率模型大大降低了水準效果的參數估計值,因此本研究認為單獨考慮水準效果之利率模型對於解讀短期利率動態調整過程之波動性稍顯不足。
英文摘要 This paper provides a comprehensive analysis of the short-term interest rate dynamics based on the US interest rate and two flexible parametric specifications. By using the two parametric specifications, we proposed a flexible one-factor diffusion framework that encompasses most parametric specifications in the literature and considering GARCH-type models with non-normal innovations to capture the potential impact of time-varying volatility and discontinuous interest-rate movements. We estimated both sets of models on the US interest-rate series using the maximum likelihood estimation method and performed relevant likelihood tests.
The empirical research points out that the significant parameter estimates for the variance function indicating that the conditional variance of the interest-rate change is a nonlinear function of the interest-rate level. Neither the affine specification nor the CEV specification alone can fully capture this nonlinearity. Moreover, using a flexible diffusion specification and incorporating GARCH volatility and non-normal innovation can’t reduce the needs for a nonlinear drift specification.
論文目次 目 錄
第壹章 緒論 1
第一節 研究動機 1
第二節 研究目的 2
第三節 研究架構 3
第貳章 文獻回顧 5
第一節 短期利率之理論模型 5
第二節 短期利率模型之實證研究 11
第三節 短期利率之綜合分析 23
第叁章 研究方法 25
第一節 實證流程 25
第二節 時間序列資料檢定 26
第三節 模型架構 31
第四節 統計方法 39
第肆章 實證分析 45
第一節 資料描述 46
第二節 時間序列資料檢定 48
第三節 模型檢驗 51
第伍章 結論 63
參考文獻 65

表 目 錄
表2-1 短期利率模型之參數限制設定比較 12
表2-2 利率模型之參數設定比較 22
表3-1 本文模型架構與文獻模型整理 33
表3-2 漂浮項非線性檢定 43
表3-3 變異項聯合型態檢定 44
表3-4 考慮變異項模型之漂浮項非線性檢定 44
表3-5 GED-GARCH模型漂浮項非線性檢定 44
表4-1 美國三個月期國庫券利率之基本統計量 46
表4-2 美國三個月期國庫券利率最適落差期選取 48
表4-3 美國三個月期國庫券利率ADF單根檢定 49
表4-4 美國三個月期國庫券利率PP單根檢定 50
表4-5 ARCH效果檢定 51
表4-6 漂浮項非線性檢定 54
表4-7 變異項之聯合型態檢定 56
表4-8 考慮變異項模型之漂浮項非線性檢定 57
表4-9 GED-GARCH模型漂浮項非線性檢定 61
表4-10 各實證利率模型之參數估計值 62

圖 目 錄
圖一 實證分析流程 25
圖二 美國三個月期國庫券利率走勢圖 47
圖三 美國三個月期國庫券利率經一階差分走勢圖 47
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