activity
20242026
collaborators

7 papers

cs.MA2026

AgentConductor: Topology Evolution for Multi-Agent Competition-Level Code Generation

Siyu Wang, Ruotian Lu, Zhihao Yang +7

Large language model(LLM)-driven multi-agent systems(MAS) coordinate specialized agents through predefined interaction topologies and have shown promise for complex tasks such as c…

cs.AI2026

Compartmentalised Agentic Reasoning for Clinical NLI

Maël Jullien, Lei Xu, Marco Valentino +1

Large language models can produce fluent judgments for clinical natural language inference, yet they frequently fail when the decision requires the correct inferential schema rathe…

cs.CL2026

A Navigational Approach for Comprehensive RAG via Traversal over Proposition Graphs

Maxime Delmas, Lei Xu, André Freitas

Standard RAG pipelines based on chunking excel at simple factual retrieval but fail on complex multi-hop queries due to a lack of structural connectivity. Conversely, initial strat…

cs.CL2025

Efficient Adaptive Rejection Sampling for Accelerating Speculative Decoding in Large Language Models

Chendong Sun, Ali Mao, Lei Xu +1

Speculative Decoding is a prominent technique for accelerating the autoregressive inference of large language models (LLMs) by employing a fast draft model to propose candidate tok…

cs.RO2025

Expertise need not monopolize: Action-Specialized Mixture of Experts for Vision-Language-Action Learning

Weijie Shen, Yitian Liu, Yuhao Wu +10

Vision-Language-Action (VLA) models are experiencing rapid development and demonstrating promising capabilities in robotic manipulation tasks. However, scaling up VLA models presen…

cs.CL2025

Adaptive LLM-Symbolic Reasoning via Dynamic Logical Solver Composition

Lei Xu, Pierre Beckmann, Marco Valentino +1

Neuro-symbolic NLP methods aim to leverage the complementary strengths of large language models and formal logical solvers. However, current approaches are mostly static in nature,…