CV
Contact Information
| Name | Han Zhang |
| Professional Title | PhD Student in Computer Science |
| hhzhang@cs.ucla.edu |
Professional Summary
PhD student at UCLA ScAI Lab, interested in Agentic RL, Agentic AI systems, and reinforcement learning-based fine-tuning methods.
Experience
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2025 - 2025 Remote
Data and Research Intern
Optum AI
- Mentor: Kimmo Kärkkäinen
- Built a two-stage LLM finetuning pipeline for ICD-10-CM diagnosis prediction
- Developed hierarchy-aware contrastive learning and dynamic confidence loss for ICD code classification
- Scaled dataset from 100K to 2.5M+ samples using PySpark
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2024 - 2024 Shanghai, China
Applied Scientist Intern
Amazon Shanghai AI Lab
- Mentors: Dr. Minjie Wang, Quan Gan
- Proposed GFS and integrated into Project 4DBInfer
- Explored novel strategies for restructuring relational databases before graph construction
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2022 - 2023 Shanghai, China
Undergraduate Researcher
APEX Lab, Shanghai Jiao Tong University
- Advisor: Prof. Weinan Zhang, Dr. David Wipf
- Led the GFS project on deep learning over relational databases
- Developed feature space alignment for tabular data using hard negative contrastive pretraining
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2023 - 2024 Pittsburgh, PA, USA
Research Intern
Ma Lab, Carnegie Mellon University
- Advisor: Prof. Jian Ma
- Applied CNNs and transformer-based models to computational genomics
- Developed novel attention layers for Hi-C data to predict gene expression
Education
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2024 - present Los Angeles, CA, USA
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2020 - 2024 Shanghai, China
Bachelor of Engineering
Shanghai Jiao Tong University
Computer Science (ACM Honor Class)
- Major GPA: 91.87/100 (Rank 5/35)
Awards
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2023 Ruiyuan-Hongshan Scholarship
ACM Class, SJTU
Top 5% students in ACM class
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2021, 2022, 2023 Zhiyuan Honorary Scholarship
SJTU
Top 5% students in SJTU
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2021 Jin Long Yu Scholarship
SJTU
Skills
Programming (): Python, C/C++, Java, Rust, Verilog
Research (): Agentic RL, LLM Post-Training, LLM Agents
Languages
Chinese : Native speaker
English : Fluent