This paper uses a new methodology for detecting this problem in this and related problems, exhibiting the property of "submodularity".

本文使用了一种新方法来检测此问题以及相关问题，从而展现出“子模性”的性质。

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This paper uses DSP as control chip, and has achieved double control for system.

该文采用了DSP作为控制芯片，实现了系统的双闭环控制。

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Finally, this paper USES GARCH model regressing the portfolio return time series.

文章最后用GARCH模型对组合收益率时间序列进行了模拟。

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