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Xin Zou

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#machine learning Preprint Sep 2026

EAVer: Long-Form Factuality Verification as an End-to-End Agentic Policy

This work introduces EAVer, an End-to-end Agentic Verifier that learns to control the complete response-level verification workflow as a unified policy, and construct 794 bidirectional same-trajectory preference pairs that keep claim grouping, search, and evidence fixed, enabling decision-focused Direct Preference Opti...

Ke-Ning Zheng, Ao-Ying Zheng, Zhi-Gang Chang et al. · 0 citations

Unlocking Multimodal Document Intelligence: From Current Triumphs to Future Frontiers of Visual Document Retrieval

This paper surveys the VDR landscape as a retrieval problem in its own right, rather than as the front end of a generation pipeline, and does so specifically through the lens of the Multimodal Large Language Model (MLLM) era, and dives into the methodological evolution along two orthogonal axes.

Yibo Yan, Jiahao Huo, Guanbo Feng et al. · 9 citations

Unveiling Language Routing Isolation in Multilingual MoE Models for Interpretable Subnetwork Adaptation

A systematic analysis of expert routing patterns in MoE models reveals Language Routing Isolation, in which high- and low-resource languages tend to activate largely disjoint expert sets, and proposes RISE, a framework that exploits routing isolation to identify and adapt language-specific expert subnetworks.

Kening Zheng, Wei-Chieh Huang, Jiahao Huo et al. · 4 citations · ⚡2
Jun 2026

Clearer Sight, Fewer Lies: Oriented Pickup Preference Optimization for Multimodal Hallucination Mitigation

This work starts from an empirical observation: when query-relevant visual evidence is explicitly strengthened using the model's own attention, generation becomes more accurate, suggesting that many failures do not arise solely from missing perception, but from an insufficient tendency to trust the evidence the model h...

Xin Zou, Hao Deng, Yibo Yan et al. · 0 citations

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