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Ruonan Zhang

2 papers indexed

openalexMathematics2026-07-23

Semi-Closed-Form Pricing of Vulnerable Geometric Asian Options Under a Three-Factor Stochastic Volatility Jump-Diffusion Model with Stochastic Interest Rates

Libin Wang, Ruonan Zhang

This paper develops a semi-closed-form pricing framework for vulnerable geometric Asian options under a three-factor stochastic volatility jump-diffusion model with stochastic interest rates. To the best of our knowledge, this is the new framework to simultaneously accommodate co…

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arxiveess.IVcs.CV2026-07-08

Towards Accurate and Fast Clinical Body Composition: A Resource-Efficient Hierarchical Segmentation Framework for Multi-Source CT

Xiaodi Shen, Qingzhu Zheng, Yaoyang Qiu, Cien Fan, Ruonan Zhang, Yangdi Wang, et al.

Background: Automated 3D segmentation of muscles and adipose tissue from CT is vital for body composition analysis, but multi-source data heterogeneity and high CPU memory demands hinder clinical deployment. Methods: We propose a coarse-to-fine hierarchical framework to segment t…

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