Lifeng Wei
Product Evaluation and Opportunity Mining with LLMs | Applied Scientist @ Amazon | PhD in statistics
- Role
- Applied Scientist at Amazon
- Location
- Bellevue, WA, US
- LinkedIn followers
- 500 followers
About Lifeng Wei
Statistics Ph.D at UC Davis. Interested in data science and machine learning. Especially in reinforcement learning and NLP. Has experience with text generation, semantic similarity, information retrieval, and answer extraction.
Experience
Applied Scientist
May 2022 — Present · Seattle, WA, US
Working at Customer Service Org, I lead the team of chatbot quality & evaluation.I build evaluation and analysis systems with LLM prompting, finetuning, and agents. Focusing on- Domain specific evaluation like policy compliance- General conversational AI system evaluation- Agentic system for customer understanding and transcript analysis at scale- Annotation quality / consistency check
Education
University of Science and Technology of China
Bachelor's degree, Statistics
2012 — 2016
University of California, Davis
Doctor of Philosophy (Ph.D.), Statistics
2016
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