将成交量分解成由好、坏消息分别引致的两部分之后，能够更进一步地解释波动率的持续性。

The trading volume can well explain volatility's persistence after they are decomposed into two parts caused by good news and bad news in turn.

youdao

然后再按照异质信息流对交易量进行分解，以此考察收益率波动的对称性。

Then, I decompose the volume by different information flow to test the symmetry of return volatility.

youdao

然后再按照异质信息流对交易量进行分解，以此考察收益率的波动的对称性。

Then, I decompose the volume by the different information flow to test the symmetry of return volatility.

youdao