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“已实现”波动率在VaR计算中的实证研究
AN EMPIRICAL STUDY ON REALIZED VOLATILITY IN THE VALUE-AT-RISK
【摘要】 本文根据“已实现”波动率的性质用ARF IM A模型对其进行模拟,并在此基础上研究了V aR,发现在学生T分布和GED分布下有比较好的预测效果.
【Abstract】 In this paper,we build an ARFIMA model to simulate realized volatility based on its characters.And we study the Valueat-Risk based on realized volatility.We find there is a better forecasting effect under the sttudents’ T distribution and Generalized error distribution.
【关键词】 “已实现”波动率;
ARFIMA模型;
VaR;
【Key words】 Realized volatility; autoregression fractional integrated moving average model; Value-at-Risk;
【Key words】 Realized volatility; autoregression fractional integrated moving average model; Value-at-Risk;
【基金】 国家社科基金(No.03BJY099);湖南省社科基金(No.04ZC029)资助项目;湖南省哲学社会科学成果评审委员会课题(No.0403035)
- 【文献出处】 经济数学 ,Mathematics in Economics , 编辑部邮箱 ,2006年03期
- 【分类号】F224
- 【被引频次】13
- 【下载频次】327