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中国管理科学 ›› 2026, Vol. 34 ›› Issue (10): 1-13.doi: 10.16381/j.cnki.issn1003-207x.2022.0262

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基于绩效正则化法的均值-下偏矩投资组合选择

姚海祥1,2, 张逸雪1, 李仲飞3()   

  1. 1.广东外语外贸大学金融学院,广东 广州 510006
    2.广东外语外贸大学金融开放发展研究院,广东 广州 510006
    3.南方科技大学金融系,广东 深圳 518055
  • 收稿日期:2022-02-14 修回日期:2022-09-13 出版日期:2026-10-25 发布日期:2026-10-09
  • 通讯作者: 李仲飞 E-mail:lizf6@sustech.edu.cn
  • 基金资助:
    国家自然科学基金面上项目(72071051);国家自然科学基金重点项目(72432005);国家社会科学基金重大转重点项目(21AZD071);广东省基础与应用基础研究基金面上项目(2025A1515010937)

Mean-lower Partial Moment Portfolio Selection Based on Performance-based Regularization Method

Haixiang Yao1,2, Yixue Zhang1, Zhongfei Li3()   

  1. 1.School of Finance,Guangdong University of Foreign Studies,Guangzhou 510006,China
    2.Institute of Financial Openness and Development,Guangdong University of Foreign Studies,Guangzhou 510006,China
    3.Department of Finance,Southern University of Science and Technology,Shenzhen 518055,China
  • Received:2022-02-14 Revised:2022-09-13 Online:2026-10-25 Published:2026-10-09
  • Contact: Zhongfei Li E-mail:lizf6@sustech.edu.cn

摘要:

Ban等[1]提出了绩效正则化法(performance-based regularization,PBR),通过向均值-方差模型、均值-CVaR模型中加入PBR约束条件,从而减小参数估计误差,提高模型的样本外表现。本文则将他们的PBR约束条件推广到更一般化的均值-下偏矩模型中。具体地,本文证明了含PBR约束条件的均值-下偏矩模型的凸性,从而保证优化问题的解是全局最优解。进一步地,证明了该优化问题解的渐近一致性。此外,改造了标准的k-折交叉检验法,并通过线性回溯法实时更新PBR约束条件的最优参数取值。最后,将该模型置于震荡的市场中进行实证检验。结果显示,相较于传统的均值-下偏矩模型,加入两个PBR约束条件的均值-下偏矩模型具有更高的夏普比率、索提诺比率、Omega比率、平均收益率和累计收益率,从而更好地在收益与风险之间取得平衡;此外,提出的带PBR约束的均值-下偏矩模型的表现优于Ban等[1]提出的带PBR约束的均值-方差模型。

关键词: 均值-下偏矩, k-折交叉检验, 线性回溯法, 绩效正则化法

Abstract:

The core of portfolio optimization problem is how to balance return and risk in the process of investment. The mean-variance model is a classical model to solve this problem. However, with the deepening of research, the variance as a risk measure cannot adapt to the real market situation, and the mean lower partial moment model came into being. At the same time, the mean-risk model often confronted the problem of parameter estimation error. Parameter uncertainty and parameter estimation error will have a negative impact on investment decision-making. Therefore, solving this problem has become a hot research direction.It is refered to Ban et al. [Management Science, 2016, 63, 1136-1154] that proposed performance-based regularization (PBR). By adding PBR constraints to the mean variance model and the mean CVaR model, they reduced the parameter estimation error and improved the out of sample performance of the model. The core idea of PBR method is to improve the performance of investment strategy outside the sample by punishing the variance term of risk measurement and expected return estimate.In this paper, their PBR constraints are extended to a more general model, which is mean-lower partial moment (LPM) model. Specifically, the convexity of the mean-LPM model with PBR constraints is proved, so as to ensure that the solution of the optimization problem is globally optimal. Furthermore, the asymptotic consistency of the solution of the optimization problem is proved. In addition, the standard k-fold cross test method is modified, and the optimal parameter values of PBR constraint conditions in real time are updated by using machine learning method and linear backtracking method. Finally, the model in the downward market is put for empirical test.As a result, it is found out that compared with the traditional mean-LPM model, the mean-LPM model with two PBR constraints has higher Sharpe ratio, Sortino ratio, Omega ratio, average rate of return and cumulative rate of return, so as to achieve a better balance between return and risk. In addition, the mean-LPM model combined with PBR constraint performs better than the mean variance model combined with PBR constraint in Ban et al. (2016).In this paper, the PBR method is extended to the general mean-LPM portfolio model, and the effectiveness of the PBR method for solving the parameter estimation error is confirmed. Regularization method has a wide range of applications, and the research of PBR method still has broad prospects. In the next step, the PBR method can be applied to the index tracking problem, or further the nature and other applicable fields of the PBR method can be explored.

Key words: mean-lower partial moment, k-fold cross test, linear back tracking method, performance-based regularization

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