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相对风险价值——一种新的一致风险度量
引用本文:胡德焜,董钢,须佶成. 相对风险价值——一种新的一致风险度量[J]. 北京大学学报(自然科学版), 2006, 42(5): 598-603
作者姓名:胡德焜  董钢  须佶成
作者单位:北京大学数学科学学院,北京,100871
摘    要:提出了一种新的风险度量指标——相对风险价值(RVaR)。它在风险控制、保险、最佳估计等方面都有明确的直观意义,并且满足一致性、风险回避性以及与多种常见序相容的合理性要求,较好地弥补了风险价值的理论缺陷。本文提出的确定RVaR的准则,保证在正态条件下所确定的RVaR与VaR相同。此外还给出并证明了RVaR的表示性公式,讨论了RVaR在风险交换和资本分配等问题上的应用。

关 键 词:相对风险价值  风险价值  一致风险度量  资本分配  风险交换  
收稿时间:2005-10-18
修稿时间:2005-10-182006-03-16

Relative Value-at-Risk: A New Kind of Coherent Risk Measure
HU Dekun,DONG Gang,XU Jicheng. Relative Value-at-Risk: A New Kind of Coherent Risk Measure[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2006, 42(5): 598-603
Authors:HU Dekun  DONG Gang  XU Jicheng
Affiliation:School of Mathematical Sciences, Peking University, Beijing, 100871
Abstract:A new coherent risk measure called Relative Value-at-risk(RVaR) was proposed. As a intuitional and meaningful index in insurance and risk control, RVaR has many good properties and is consistent with several often used orders. We offer a criterion to determine the value of parameter ρ and RVaR. Based on the criterion, RVaR is identical with VaR for the normal-distributed risk, bigger than VaR for the fat-tail risk and smaller than VaR for the thin-tail risk. We also prove the representation formula of RVaR and illuminate its purport. Finally, RVaR is applied in risk exchange model and capital allocation model.
Keywords:RVaR   VaR   coherent risk   capital allocation   risk exchange
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