Xinhao Zhang
Portland,OR
Summary
Dynamic and innovative professional with a proven track record at Portland State University, specializing in machine learning and SQL database management. Excelled in research, contributing to peer-reviewed publications, and enhancing student learning through effective teaching. Skilled in Python and academic research, demonstrating exceptional problem-solving abilities and teamwork.
Overview
1
1
year of professional experience
Work History
Teaching Assistant
Portland State University
Portland, OR
09.2024 - 03.2025
- As a Teaching Assistant, I supported courses in SQL database management and discrete mathematics, assisting students with technical questions, and maintaining SQL databases. I also facilitated discussions and graded assignments to enhance student learning.
- Alongside teaching, I continued my research in machine learning, refining methodologies, and submitting findings to peer-reviewed conferences.
Research Assistant
Portland State University
Portland , OR
09.2023 - 09.2024
- As a Research Assistant, I explored LLMs and machine learning for tabular data, focusing on data mining and predictive modeling. I designed and implemented algorithms, conducted experiments, and contributed to peer-reviewed publications.
- I also maintained open-source repositories on GitHub, managing code organization, documentation, and version control to support collaboration and reproducibility.
- I am skilled in deep learning frameworks like CNNs, RNNs, and Transformers, with expertise in LLMs, RAG, RLHF, and reinforcement learning. My research in automated feature engineering has strengthened my data preprocessing skills, and I am also proficient in classical models like Random Forest, SVM, and KNN.
Education
Ph.D. - Computer Science
Portland State University
Portland, OR12-2028
Bachelor of Science - Statistics
Jilin University
China06-2021
Skills
- Python、
- SQL
- C
- JavaScript
- HTML
- Bash/Shell scripting
- Git
- Linux System Usage
- SQL Databases
- Deep Learning
- Reinforcement Learning
- Large Language Models
- Feature Engineering & Data Preprocessing
- Academic Writing & Research
Publication
[1] [IJCAI] Xinhao Zhang, Zaitian Wang, Lu Jiang, Wanfu Gao, Pengfei Wang, Kunpeng Liu. TFWT: Tabular Feature Weighting with Transformer [C]. In Proceedings of IJCAI 2024, the 33rd International Joint Conference on Artificial Intelligence, Jeju, South Korea, 2024.
[2] [ACL] Jinghan Zhang, Xiting Wang, Yiqiao Jin, Changyu Chen, Xinhao Zhang, Kunpeng Liu. Prototypical Reward Network for Data-Efficient RLHF [C]. In Proceedings of ACL 2024, the 62nd Annual Meeting of the Association for Computational Linguistics, Bangkok, Thailand, 2024.
[3] [ICKG] Xinhao Zhang, Jinghan Zhang, Wujun Si, Kunpeng Liu. Dynamic Weight Adjusting Deep Q-Networks for Real-Time Environmental Adaptation [C]. In Proceedings of ICKG 2024, the 15th IEEE International Conference on Knowledge Graphs, Abu Dhabi, UAE, 2024.
[4] [ICKG] Jinghan Zhang, Henry Xie, Xinhao Zhang, Kunpeng Liu. Enhancing Risk Assessment in Transformers with Loss-at-Risk Functions [C]. In Proceedings of ICKG 2024, the 15th IEEE International Conference on Knowledge Graphs, Abu Dhabi, UAE, 2024.
[5] [AI] Limin Wang, Xinhao Zhang (Corresponding Author), Kuo Li, Shuai Zhang. Semi-supervised Learning for k-Dependence Bayesian Classifiers [J]. Applied Intelligence, Volume 52, pp. 3604–3622, 2021.
[6] [AI] Limin Wang, Shuai Zhang, Musa Mammadov, Kuo Li, Xinhao Zhang, Siyuan Wu. Semi-supervised Weighting for Averaged One-Dependence Estimators [J]. Applied Intelligence, Volume 52, pp. 4057–4073, 2021.
Affiliations
- I have developed a user-friendly desktop application that streamlines grading, enabling instructors to efficiently calculate and format student scores, including bonus points, while ensuring a clean and organized output. GitHub: https://github.com/XinhaoZh23/speedgrader.
Timeline
Teaching Assistant
Portland State University
09.2024 - 03.2025
Research Assistant
Portland State University
09.2023 - 09.2024
Ph.D. - Computer Science
Portland State University
Bachelor of Science - Statistics
Jilin University
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