Carnegie Mellon Language Technologies Institute

Mingxi Yan

Work Resume (PDF) ↗Email ↗

Live projects

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Research & engineering

Selected work

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Engineering · TikTok01

Enterprise retrieval for AI agents

Graph-based retrieval over Hive tables, dashboards, and documents.

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Evaluated on an on-call Q&A benchmark and shipped as an internal skill. Also built a livestream revenue-diagnosis copilot now used by operations.

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Research · CMU–Apple02

PersonaTeaming

Persona-conditioned automated red-teaming. UIST 2026.

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Designed the persona-generation algorithm. Across 11 conditions and 6 target models: +46% attack success and +7% attack diversity over RainbowPlus.

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Research · Sapling Lab03

Mind attribution in human–AI conversation

Simulation study of how users attribute minds to AI over long conversations.

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NLP lead. Multi-turn user simulation and turn-level LLM judges. Manuscript in preparation.

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