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Wei-Hao Chen

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Preprint Sep 2026

Backstitch: Restoring Request Causality Across a Production Microservice Fleet

A major video platform runs on thousands of microservices, each request propagating a context so downstream work can be traced and governed. At handoffs outside instrumented paths, e.g., custom queues and callbacks, the payload continues but the context does not, and the request still succeeds under existing tests. Suc...

Zi-Yue Dang, Qiu-Yu Wu, Hao-Yun Xu et al. · 0 citations
Review Aug 2026

MUSE: An Interactive Meta-Agent for Understanding and Steering LLM-powered Data Science Systems

MUSE is presented, an interactive meta-agent that enhances user understanding and control of agentic data science systems by dynamically restructuring low-level execution traces into multiple semantic levels that support navigation from high-level overviews to low-level implementation details.

Wei-Hao Chen, Weixi Tong, Yuan Tian et al. · 0 citations

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