Summary
Changsheng Liu is a Machine Learning Engineer with 11 years of experience focusing on NLP and applied ML, currently working on ads ranking, signal mining, and noisy-label mitigation at Meta in the Greater Seattle Area. He holds a Ph.D. in Computer Science from the University of Pittsburgh and has a strong academic foundation complemented by industry experience building deep learning models for named entity and relation extraction. His background includes backend systems work and field engineering early in his career, which gives him a pragmatic view of production constraints and robust system design. At Meta he applies research-grade NLP to large-scale user intent signals and down-funnel optimization, bridging theory and high-throughput engineering. Known for tackling noisy labels and text-based user interest modeling, he blends rigorous research training with hands-on deployment experience.
11 years of coding experience
2 years of employment as a software developer
Master's Degree, Computer Science, Master's Degree, Computer Science at Peking University
Bachelor of Engineering (BEng), Computer Science, Bachelor of Engineering (BEng), Computer Science at Huazhong University of Science and Technology
Doctor of Philosophy (Ph.D.), Computer Science, Doctor of Philosophy (Ph.D.), Computer Science at University of Pittsburgh