Xiaojian Liu

Papers on Lattice

Total citations

Topics

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Publication activitypapers/week, last 8 weeks

Research focus

RLHF & Preference Learning (2)Tool Use & Agents (1)Reasoning & Chain-of-Thought (1)

Frequent co-authors

Zhixuan Li (2)Changwo Wu (2)Yuqian Wang (1)Han Xu (1)

Papers (2)

Jul 13, 2026

Jul 13, 2026·also PKU

STAMP: Provenance-Guided Credit Assignment for Deep Search Agents

STAMP redefines credit assignment in deep search agents, leading to up to 5.5-point gains in performance by effectively linking actions to their supporting evidence.

Yuqian Wang, Zhixuan Li, Xiaojian Liu +1

RLHF & Preference Learning Tool Use & Agents

Xiaojian Liu +8Jul 13, 2026

SCOPE-RL: Optimizing Reasoning Paths Before and After Success

SCOPE-RL boosts LLM accuracy by over 11% while cutting reasoning tokens significantly, reshaping how we optimize reasoning paths in AI.

Xiaojian Liu, Han Xu, Jianqiang Xia +6

Reasoning & Chain-of-Thought RLHF & Preference Learning