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Author

Zirong Chen

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Preprint Oct 2026

Video-Arena: A Scalable Agentic Video Benchmark for Spatiotemporal Capability

Understanding and tracking a dynamic world are fundamental to visual intelligence. Existing video benchmarks provide limited insight into whether models can maintain a coherent understanding of evolving world state. Building such a benchmark from real-world videos is challenging because the underlying world state is pa...

Kuan Zhang, Yu-Kun Chen, Zhi-Hao Yang et al. · 0 citations
Preprint Sep 2026

Learning Multimodal Embeddings with Evidence-Aligned Readout

Multimodal large language models can expose task-relevant evidence through generation, but producing useful evidence does not by itself determine how it enters a retrieval embedding. We study whether the semantic organization of that evidence can also specify where representations are read. To address this question, we...

Zi-Rong Chen, Fu-Da Ye, En-Jun Du et al. · 1 citation
#machine learning Preprint Feb 2026

Patch the Distribution Mismatch: RL Rewriting Agent for Stable Off-Policy SFT

This work forms data rewriting as a policy-learning problem and trains a lightweight LoRA rewriting policy with reinforcement learning that optimizes question-answering-style distributional alignment and semantic diversity under a hard task-consistency gate, producing verified supervision for downstream SFT.

Jia-Cheng Wang, Zhi-Jie Liu, Ping Jian et al. · 0 citations
Preprint Aug 2026

EviRank: Structured Relevance Evidence for Multimodal Image Re-ranking

EviRank is recast multimodal image re-ranking as a semantic constraint satisfaction problem and proposed, which parses any query - text-only, image-only, or composed - into a unified evidence package: typed criteria across six semantic slots, each labelled required, forbidden, or ignorable.

Enjun Du, Si-Yi Liu, Zi-Rong Chen et al. · 2 citations

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