collaborators

10 papers

cs.AI2026

VS-Bench: Evaluating VLMs for Strategic Abilities in Multi-Agent Environments

Zelai Xu, Zhexuan Xu, Xiangmin Yi +7

Recent advancements in Vision Language Models (VLMs) have expanded their capabilities to interactive agent tasks, yet existing benchmarks remain limited to single-agent or text-onl…

cs.AI2026

WideSeek-R1: Exploring Width Scaling for Broad Information Seeking via Multi-Agent Reinforcement Learning

Zelai Xu, Zhexuan Xu, Ruize Zhang +7

Recent advancements in Large Language Models (LLMs) have largely focused on depth scaling, where a single agent solves long-horizon problems with multi-turn reasoning and tool use.…

cs.AI2026

RE-PO: Robust Enhanced Policy Optimization as a General Framework for LLM Alignment

Xiaoyang Cao, Zelai Xu, Mo Guang +4

Standard human preference-based alignment methods, such as Reinforcement Learning from Human Feedback (RLHF), are a cornerstone for aligning large language models (LLMs) with human…

cs.AI2026

Mastering Multi-Drone Volleyball through Hierarchical Co-Self-Play Reinforcement Learning

Ruize Zhang, Sirui Xiang, Zelai Xu +6

In this paper, we tackle the problem of learning to play 3v3 multi-drone volleyball, a new embodied competitive task that requires both high-level strategic coordination and low-le…

cs.RO2026

VolleyBots: A Testbed for Multi-Drone Volleyball Game Combining Motion Control and Strategic Play

Zelai Xu, Ruize Zhang, Chao Yu +9

Robot sports, characterized by well-defined objectives, explicit rules, and dynamic interactions, present ideal scenarios for demonstrating embodied intelligence. In this paper, we…

cs.AI2026

MARSHAL: Incentivizing Multi-Agent Reasoning via Self-Play with Strategic LLMs

Huining Yuan, Zelai Xu, Zheyue Tan +10

Developing Large Language Models (LLMs) to cooperate and compete effectively within multi-agent systems (MASs) is a critical step towards more advanced intelligence. While reinforc…