Nan Zhang

Papers on Lattice

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Publication activitypapers/week, last 8 weeks

Research focus

Multimodal Models (2)Reasoning & Chain-of-Thought (2)Constitutional AI & AI Ethics (1)Eval Frameworks & Benchmarks (1)

Frequent co-authors

Zhiwei Yang (1)Yuanchen Wu (1)Yucong Meng (1)Ke Yan (1)

Papers (3)

Jul 7, 2026

Zhiwei Yang +52w ago

Scene Graph Thinking: Reinforcing Structured Visual Reasoning for Multimodal Large Language Models

Structured scene graphs can dramatically enhance MLLMs' reasoning capabilities, leading to substantial performance gains on complex visual tasks.

Zhiwei Yang, Yuanchen Wu, Nan Zhang +3

Multimodal Models Reasoning & Chain-of-Thought

May 25, 2026

TIAR: Trajectory-Informed Advantage Reweighting for LLM Abstention Learning

LLMs can learn to abstain from answering questions they're unsure about with state-of-the-art accuracy by dynamically re-weighting abstention rewards based on trajectory consistency during training.

Muyu Pan, Shu Zhao, Nan Zhang +3

Constitutional AI & AI Ethics Eval Frameworks & Benchmarks RLHF & Preference Learning

Feb 17, 2026

MaS-VQA: A Mask-and-Select Framework for Knowledge-Based Visual Question Answering

Stop naively aggregating knowledge for KB-VQA: MaS-VQA's Mask-and-Select mechanism shows how to prune irrelevant image regions and knowledge fragments for better reasoning.

Xianwei Mao, Nan Zhang, Haikuan Huang

Computer Vision Multimodal Models Reasoning & Chain-of-Thought

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Nan Zhang

Publication activitypapers/week, last 8 weeks

Research focus

Frequent co-authors

Papers (3)