October 2025: Released ProofGrader (Paper, Website); September 2025: Selected as one of MIT Technology Review Innovators Under 35 Asia Pacific 2025; July 2025: Jiacheng and the OLMoTrace team won the ACL Best Demo Paper Award; introduced FlexOlmo and CompactDS; Ph.D. dissertation won multiple awards including ACM Doctoral Dissertation Award Honorable Mention, ACL Doctoral Dissertation Award, etc.
Research Experience
Part-time visiting researcher at Meta/FAIR; interned at Google Research and Salesforce Research.
Education
Ph.D. in Computer Science & Engineering from the University of Washington, advised by Hannaneh Hajishirzi and Luke Zettlemoyer; B.S. in CSE from Seoul National University.
Background
Research interests: Natural Language Processing and Machine Learning, particularly on Large Language Models (LLMs). Background: Assistant Professor at UC Berkeley EECS and a research scientist at the Allen Institute for AI. Affiliated with the Berkeley Artificial Intelligence Research (BAIR) and the Berkeley NLP Group.
Miscellany
Co-teaching CS 288 Advanced Natural Language Processing at UC Berkeley.