American Options Pricing under Heston Model via Curriculum Learning in Coupled PINNs
通过课程学习与耦合 PINN 为 Heston 模型下的美式期权定价AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究美式期权定价,并以 Heston 随机波动率模型为核心设定,直接对应资产定价与波动率方向。
通过课程学习与耦合 PINN 为 Heston 模型下的美式期权定价AI 解读 ↓
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In American options, the early exercise feature allows the option to be exercised at any time prior to expiration. However, this flexibility introduces a challenge: the pricing model must value the option while simultaneously determining an unknown, time-varying exercise boundary. The Heston model is one of the most popular ways to model real market behavior because it allows volatility to change over time. However, unlike European options, there is no closed-form solution for American options under the Heston model, so we have to use numerical methods. In this paper, we propose a novel approach to solving the stochastic Heston partial differential equation for American options, using coupled physics-informed neural networks (PINNs) to predict both the option price and the free boundary, while employing curriculum learning and adaptive resampling to stabilize model training. Our work builds on recent deep learning methods but introduces a more effective training strategy to address the limitations of these approaches. The numerical results demonstrate the effectiveness of the proposed learning framework, providing a robust and efficient alternative to pricing American options, enabling rapid inference and accurate estimation under stochastic volatility.