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Yuan-Zhao Zhai

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#artificial intelligence Preprint Oct 2026

Error-Propagation Modeling for Failure Attribution in LLM-Based Multi-Agent Systems

LLM-based multi-agent systems (MASs) are increasingly used to solve complex tasks through coordinated reasoning, tool use, and interaction with external resources. However, attributing failures in such systems remains challenging because the observed outcome often does not directly reveal the error responsible for the...

Jia-Qi Liao, Yuan-Zhao Zhai, Huan-Xi Liu et al. · 0 citations
Preprint Aug 2026

Resilience Matters for Embodied Agents System: New Metrics, Systematic Evaluation, and Optimization

Embodied Agents System (EAS) are increasingly deployed in open-world physical domains, where reliability directly dictates deployment quality and human-agent trust. However, existing evaluations rely on outcome-centric metrics as success rate or safety scores that collapse diverse execution trajectories into coarse sco...

Yapeng Liu, Yuan-Zhao Zhai, Xudong Gong et al. · 0 citations
Preprint Aug 2026

Energy-Structured Latent World Models with Neural Time Fields for Physically Constistent Open-World Motion Planning

A novel Energy-Structured Latent Latent World Model to structure the ELWM latent state to explicitly carry energy and momentum, ensuring strictly causal transitions via dissipation and control ports, and demonstrates that embedding explicit physical structures into latent spaces intrinsically bridges the gap between pr...

Yapeng Liu, Yuan-Zhao Zhai, Bo Ding et al. · 0 citations
Conference Jul 2026

Context-RCA: A Context-Controlled Multi-Agent Framework for Root Cause Analysis in Microservice Systems

Root cause analysis (RCA) in microservice systems is challenging because observable symptoms often propagate along service dependencies and become separated from the actual underlying cause. Recent large language model (LLM)-based agent frameworks have shown promise for automating RCA, but existing methods still suffer...

Jun-Chi Kang, Xunhui Zhang, Yuan-Zhao Zhai et al. · 0 citations
Preprint Aug 2026

An Empirical Study on the Impact of Normalized Use-Case Specifications on Traceability

This work proposes a requirement-oriented normalization method using controlled natural language and large-language-model-based prompt engineering to strengthen semantic representation and mitigate semantic divergence in source code requirements.

Luoyuan Shi, Yuan-Zhao Zhai, Da-Wei Feng et al. · 0 citations
Preprint Jul 2026

MCPEvol-Bench: Benchmarking LLM Agent Performance Across Dynamic Evolutions of MCP Servers

A novel benchmark for evaluating the task-solving capabilities of LLM agents under dynamic toolset evolution, and proposes 11 mutation operators to simulate realistic tool evolution within 123 MCP servers, establishing MCPEvol-Bench as a standard for evaluating agent adaptability in dynamic tool environments.

Huanxi Liu, Kun Hu, Jiaqi Liao et al. · 0 citations
Preprint Aug 2026

ReFrame: Evidence-Guided Test-Time Safety Alignment in Multimodal Large Language Models

ReFrame is a training-free multimodal input reframing framework where two agents share a lightweight locally deployed MLLM: the evidence-generation agent constructs complementary risk and utility evidence, and the rewrite-and-routing agent converts it into a safe proxy prompt and image-routing decision before calling t...

Wenzheng Jiang, Xuan-Kun Rong, Yuan-Zhao Zhai et al. · 0 citations

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