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cs.AI2026
DocPilot: Interactive Agent Orchestration and Training for Long Visual Document Understanding
Zhuowen Liang, Xiaotian Lin, Yuyu Luo +2
Multimodal long-document question answering requires models to seek sparse evidence across pages and modalities, understand heterogeneous document content, and reason over the coll…
cs.AI2026
Gradient-Aligned Pair Selection for Personalized Preference Optimization
Ruoming Jin, Xinyu Li, Hao Zhou +6
Personalizing large language models (LLMs) requires aligning generation behavior with user-specific preferences rather than aggregate quality. While Direct Preference Optimization…