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Jiahui Chen

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#artificial intelligence Preprint Oct 2026

IsoVRBench: Video Reward Modeling Without Human Feedback

Video reward models are trained and evaluated on human preferences between videos that often differ simultaneously on properties such as prompt alignment, visual fidelity, motion, and generator identity. As a result, aggregate accuracy does not reveal which video properties a reward model can reliably distinguish. We c...

S. Li, Jacqueline He, Jia-Hui Chen et al. · 0 citations

Unified Text-Image Generation with Weakness-Targeted Post-Training

This work explores post-training to achieve fully unified text-image generation, where a model autonomously transitions from textual reasoning to visual synthesis within a single inference process, and enables improvements in multimodal image generation across four diverse, independent T2I benchmarks.

Jiahui Chen, Philippe Hansen-Estruch, Xiao-Chuang Han et al. · 1 citation

Multi-Modal Language Models as Text-to-Image Model Evaluators

MT2IE is presented, an evaluation framework in which a single multimodal large language model (MLLM) acts as an evaluator agent, iteratively generating the evaluation prompts and scoring the resulting images, showing that MT2IE's image-text consistency scores have higher correlation with human judgment than metrics pre...

Jiahui Chen, Candace Ross, Reyhane Askari-Hemmat et al. · 4 citations · ⚡1

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