Ziwei Zhou — accepted AI-conference papers

2026

AVGen-Bench: A Task-Driven Benchmark for Multi-Granular Evaluation of Text-to-Audio-Video Generation

Ziwei Zhou, Zeyuan Lai, Rui Wang, Yifan Yang, Yuqing Yang, Qi Dai +2

ICML 2026poster

Text-to-Audio-Video (T2AV) generation is rapidly becoming a core interface for media creation, yet its evaluation remains fragmented. Existing benchmarks largely assess audio and video in isolation or rely on coarse embedding similarity, failing to capture fine-grained joint correctness required by …

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2026

Physics-Informed Koopman Neural Estimation of the Heston Model from High-Frequency Observations

Qiuming Zhu, Haoran Kou, Linyi Qian, Chunqi Shi, Xianyi Wu, Ziwei Zhou

AAAI 2026technical

We propose a physics-informed learning framework, called Koopman-PINN, to estimate the parameters of the Heston stochastic volatility model with high-frequency price data in financial markets. The method integrates a nonparametric volatility estimation (known as ART-filter in the literature), moment

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