将整个样本区分成两个子区间分别回归后发现，利率水平、斜率和曲度三因子所隐含的信息随着时间不断增加。
What's more, we split the whole sample interval into two segments, and we find these three factors contain more and more information about future's movement as time goes by.
将整个样本区分成两个子区间分别回归后发现，利率水平、斜率和曲度三因子所隐含的信息随着时间不断增加。
What's more, we split the whole sample interval into two segments, and we find these three factors contain more and more information about future's movement as time goes by.
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