arXiv:2601.11097q-fin.CPcs.LG2026-01被引 1

用可学习的KAN网络改进高维期权对冲,显著降低风险成本。

KANHedge: Efficient Hedging of High-Dimensional Options Using Kolmogorov-Arnold Network-Based BSDE Solver

  • 基于Kolmogorov-Arnold网络构建新式BSDE对冲模型
  • 在多维市场下对冲成本显著低于传统MLP方法
  • 适合量化金融中需要精准风险控制的高维期权场景

高维期权定价与对冲在量化金融中面临严峻挑战,传统基于偏微分方程(PDE)的方法受维数灾难影响难以应用。基于随机微分方程(BSDE)的框架提供了更高效的替代方案,近年来基于深度学习的BSDE求解器(普遍采用多层感知机,MLP)在此基础上实现了可扩展的数值解法。本研究发现,尽管现有基于MLP的深度BSDE方法在期权定价上表现良好,但对冲性能仍有提升空间。为此,我们提出KANHedge,一种将柯尔莫哥洛夫-阿诺德网络(KANs)引入BSDE框架的新式对冲方法。与使用固定激活函数的MLP不同,KANs采用可学习的B样条激活函数,能更优地逼近连续导数。我们在多个维度和市场条件下,针对欧式与美式篮子期权进行了全面评估。实验结果表明,虽然KANHedge与MLP在定价精度上相当,但在对冲性能上显著更优,具体表现为对冲成本指标大幅下降,展现出更强的风险控制能力。

原文摘要 · Abstract (English)

High-dimensional option pricing and hedging present significant challenges in quantitative finance, where traditional PDE-based methods struggle with the curse of dimensionality. The BSDE framework offers a computationally efficient alternative to PDE-based methods, and recently proposed deep BSDE solvers, generally utilizing conventional Multi-Layer Perceptrons (MLPs), build upon this framework to provide a scalable alternative to numerical BSDE solvers. In this research, we show that although such MLP-based deep BSDEs demonstrate promising results in option pricing, there remains room for improvement regarding hedging performance. To address this issue, we introduce KANHedge, a novel BSDE-based hedger that leverages Kolmogorov-Arnold Networks (KANs) within the BSDE framework. Unlike conventional MLP approaches that use fixed activation functions, KANs employ learnable B-spline activation functions that provide enhanced function approximation capabilities for continuous derivatives. We comprehensively evaluate KANHedge on both European and American basket options across multiple dimensions and market conditions. Our experimental results demonstrate that while KANHedge and MLP achieve comparable pricing accuracy, KANHedge provides improved hedging performance. Specifically, KANHedge achieves considerable reductions in hedging cost metrics, demonstrating enhanced risk control capabilities.

期权对冲KAN网络金融计算高维建模

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