Therefore, it is becoming more important to study the dependence of extreme events. And this paper continues the research on the tail features of asset returns, especially of stock markets.

而且，近些年的一些金融极端事件，在全球范围内造成巨大影响，因而，研究极端事件之间发生的相关度也显得尤为重要。

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Therefore, it is becoming more important to study the dependence of extreme events. And this paper continues the research on the tail features of asset returns, especially of stock markets.

而且，近些年的一些金融极端事件，在全球范围内造成巨大影响，因而，研究极端事件之间发生的相关度也显得尤为重要。

youdao