collaborators

5 papers

cs.LG2026

To Answer or to Abstain: Mitigating Search-Agent Hallucinations via Abstention-Aware Reinforcement Learning

Fengji Zhang, Tianyu Fan, Yuxiang Zheng +4

Recent advances in equipping Large Language Models (LLMs) with search tools and outcome-reward reinforcement learning (RL) have achieved new state-of-the-art results on open-domain…

cs.AI2026

Safactory: A Scalable Agentic Infrastructure for Training Trustworthy Autonomous Intelligence

Xinquan Chen, Zhenyun Yin, Shan He +38

As large models evolve from conversational assistants into autonomous agents, challenges increasingly arise from long-horizon decision making, tool use, and real environment intera…

cs.CL2026

DeepInnovator: Triggering the Innovative Capabilities of LLMs

Tianyu Fan, Fengji Zhang, Yuxiang Zheng +5

The application of Large Language Models (LLMs) in accelerating scientific discovery has garnered increasing attention, with a key focus on constructing research agents endowed wit…

cs.CL2025

ASearch: Ambiguity-Aware Question Answering with Reinforcement Learning

Fengji Zhang, Xinyao Niu, Chengyang Ying +7

Recent advances in Large Language Models (LLMs) and Reinforcement Learning (RL) have led to strong performance in open-domain question answering (QA). However, existing models stil…

cs.AI2025

Understanding DeepResearch via Reports

Tianyu Fan, Xinyao Niu, Yuxiang Zheng +5

DeepResearch agents represent a transformative AI paradigm, conducting expert-level research through sophisticated reasoning and multi-tool integration. However, evaluating these s…