Value-at-Risk 基本例句 风险价值 It mainly on the basis of their predecessor's Research of the extreme value theory, it discussed how to use extreme value theory to estimate value-at-risk VaR of China's stock market more precise. 本文在极值理论研究的基础上，探讨怎样用改进的历史模拟法来更加精确的估计中国股市所面临的金融风险。 fabiao