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    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/94726


    Title: 聯合系統與獨特風險下之信用違約交換評價
    Joint pricing of CDS spreads with Idiosyncratic and systematic risks
    Authors: 王聖文
    Wang, Sheng-Wen
    Contributors: 翁久幸
    廖四郎
    Weng, Ruby Chiu-Hsing
    Liao, Szu-Lang
    王聖文
    Wang, Sheng-Wen
    Keywords: 信用違約交換
    系統風險
    獨特性風險
    狀態空間模型
    Variance Gamma過程
    credit default swaps
    systematic risk
    idiosyncratic risk
    state-space model
    Variance Gamma process
    Date: 2009
    Issue Date: 2016-05-09 11:42:12 (UTC+8)
    Abstract: 本研究透過聯合系統與獨特風險綜合評估違約的強度，假設市場上經濟變數或資訊影響系統之違約強度，然若直接考慮所有經濟變數到模型中將可能會有共線性或維度過高之疑慮，因此透過狀態空間模型來設定狀態變數以及經濟變數之關係並將萃取三大狀態變數分別用以描述市場實質活動面、通貨膨脹以及信用環境。另外，將透過結構式模型來計算獨特性風險大小，當個別潛在的變數低於一定數值將導致個別的違約事件發生。而因布朗運動可能無法描述或校準市場上違約之鋒態以及偏態，將進一步考慮Variance Gamma過程用以更準確描述真實違約狀況。最後透過結合以上兩個風險綜合評估下，考慮一個聯合違約模型來評價信用違約交換之信用價差。
    Systematic and idiosyncratic risks are supposed to jointly trigger the default events. This paper identifies three fundamental risks to capture the systematic movement: real activity, inflation, and credit environment. Since most macroeconomic variables fluctuate together, the state-space model is imposed to extract the three variables from macroeconomic data series. In the idiosyncratic part, the structural model is applied. That is, idiosyncratic default
    is triggered by the crossing of a barrier. For improvement of the underlying lognormal distribution, we assume the process for the potential variable of the firm follows a Variance Gamma process, sufficient dimensions of which can fit the skewed and leptokurtic distributions. Under the specific setting of combinations of the two risks (the so-called joint default model), we price credit default swaps.
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    Description: 碩士
    國立政治大學
    統計學系
    95354010
    Source URI: http://thesis.lib.nccu.edu.tw/record/#G0953540102
    Data Type: thesis
    Appears in Collections:[Department of Statistics] Theses

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