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Katetec · 2025年02月09日

Level III Mock 1 No.PZ202501020300000902

Statement 3: Quantitative models, especially statistical models, tend to be stable in situations that differ from those on which they were estimated or calibrated.


Statement 3 is incorrect because quantitative models, especially statistical models, often fail in scenarios that differ from those on which they were estimated/calibrated.

怎么理解这个答案解析?

1 个答案

笛子_品职助教 · 2025年02月10日

嗨,爱思考的PZer你好:


Hello,亲爱的同学~

量化模型是根据过去的历史数据,总结规律,做成策略,并运用到现在的投资。

因此,需要一个前提,即过去的市场环境,与现在的市场环境,差距不大,这样过去的规律才能在现在依然有用。

如果过去的市场环境和现在的市场环境差异非常大,即(differ from those on which they were estimated/calibrated.),过去的规律不适合现在,量化模型就会失效(often  fail)。

题目里说量化模型即使在市场环境差异大的时候依然是稳定的,这个说法不正确,因此是( is incorrect)

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