👋 Hi! I am Junjie Zhang. I am currently a Master’s student at the Department of Computer Science and Technology, University of Science and Technology of China (USTC), supervised by Prof. Zhenya Huang, Prof. Qi Liu, and Prof. Enhong Chen at the BDAA Lab. Before that, I received my B.Eng. degree from the Department of Computer Science, Sichuan University in June 2025. Additionally, I will be joining Tencent for a joint academic-industry training program this upcoming summer.

🔬 My research primarily focuses on the cognition and mathematical reasoning of Large Language Models (LLMs), including exploring internal model features to evaluate reasoning correctness. I am also deeply engaged in interdisciplinary collaborations in bioinformatics and medical informatics. My work spans leveraging LLM multi-agent frameworks for cancer origin tracing, developing multimodal digital biomarkers using wearable sensors, and designing self-supervised calibration methods for robust model predictions.

📬 I am always open to collaborations and academic exchanges, feel free to reach out via email: polabread@mail.ustc.edu.cn.

🎓 Education

2025.09 - 2028.06, University of Science and Technology of China (USTC), Hefei, China. Master’s Student in Computer Science and Technology.
2021.09 - 2025.06, Sichuan University (SCU), Chengdu, China. B.Eng. in Computer Science and Technology.

📝 Publications & Patents

AACR 2026

CUPAI-2: A Collaborative Multi-Agent LLM Framework for Diagnosis of Cancer of Unknown Primary. Junjie Zhang^†, Lingjie Fan^†, Anzhi Chen, Zheyi Ji, Kai Wang^*, Junhan Zhao^*. American Association for Cancer Research (AACR), 2026 (Oral Presentation). _{† Equal contribution; * Corresponding authors}

IEEE TIM 2024

PFIMPA: A Multimodal Approach to Predict Physical Function Impairment in Older Adults Using Physical Activity From Wrist-Worn Accelerometer. Lingjie Fan, Junjie Zhang, Junhan Zhao, Fengyi Wang, Tao Luo, Tao Lin. IEEE Transactions on Instrumentation and Measurement, 2024. (A1) [Web]

PRCV 2024

Pseudo-Prompt Generating in Pre-trained Vision-Language Models for Multi-Label Medical Image Classification. Yaoqin Ye, Junjie Zhang, Hongwei Shi. Pattern Recognition and Computer Vision (PRCV 2024), 2024. (CCF-C) [Web] [Github]

🔄Under Review, CIPA: A Multimodal Deep Learning Fusion-Based Cognitive Impairment Monitoring Framework Driven by Motion Tracking Data. Lingjie Fan, Junhan Zhao, Junjie Zhang, Xiyue Wang, Tao Lin., 2026.
🔄Under Review, Face2MCI: A Deep Learning Framework for Mild Cognitive Impairment Detection from Facial Videos. Lingjie Fan^†, Junjie Zhang^†, Zheming Zhang, Tao Lin, Tianchen Niu, Shengyi Liu, Leyang Tao, Xinyao Xia, Wenhuan Li, Yongji Wu, Fengyi Wang, Lauren Chan, Samuel L. Volchenboum^*, Junhan Zhao^*., 2026. _{† Equal contribution; * Corresponding authors}
From Physical Activity Patterns to Cognitive Status: Development and Validation of Novel Digital Biomarkers for Cognitive Assessment in Older Adults. Lingjie Fan, Fengyi Wang, Junhan Zhao, Junjie Zhang, Yangan Li, Jia Tang, Tao Lin, Quan Wei. International Journal of Behavioral Nutrition and Physical Activity, 2025. (A1) [Web]
Predicting Physical Functioning Status in Older Adults: Insights from Wrist Accelerometer Sensors and Derived Digital Biomarkers of Physical Activity. Lingjie Fan, Junhan Zhao, Yao Hu, Junjie Zhang, Xiyue Wang, Fengyi Wang, Mengyi Wu, Tao Lin. Journal of the American Medical Informatics Association (JAMIA), 2024. [Web]
Multimodal Physical Fitness Monitoring (PFM) Framework Based on TimeMAE-PFM in Wearable Scenarios. Junjie Zhang, Zheming Zhang, Huachen Xiang, Yangquan Tan, Linnan Huo, Fengyi Wang. 2024 5th International Conference on Computer Engineering and Application (ICCEA), 2024. (EI) [Web]
Exploring Outdoor Activity Limitation (OAL) Factors Among Older Adults Using Interpretable Machine Learning. Lingjie Fan, Junjie Zhang, Fengyi Wang, Shuang Liu, Tao Lin. Aging Clinical and Experimental Research, 2023. [Web]
Ergonomic Load Differentiates Pediatric and Adult Physiotherapy: Ergonomic Differences Between Adult Physiotherapy and Pediatric Physiotherapy. Yongji Wu, Shuang Liu, Junjie Zhang, Borui Jiang, Haitao Wang, Min Hu. Proceedings of the 3rd International Conference on Human Machine Interaction (ICHMI), 2023. (EI) [Web]

Patents & Software Copyrights

[Invention Patent] Zero-shot Classification Algorithm for Chest Medical Images Based on Multimodal Contrastive Learning. (Patent No: 202410342039.5)
[Software Copyright] Intelligent Diagnostic VQA Software (Registration No: 2024SR0446319)
[Software Copyright] Intelligent VQA Diagnostic Assistant Software (Registration No: 2024SR0703994)

💼 Internships

2024.11 - 2025.05, Baidu, Beijing, China. Paddle Framework R&D Engineer (Deep Learning Platform Technology Dept.)
2024.10 - 2025.02, Tsinghua University (Energy Internet Innovation Research Institute), Chengdu, China. Data Analyst
2024.01 - 2024.04, Tsinghua University (Institute for AI Industry Research, AIR), Beijing, China. Research Assistant
2023.07 - 2023.08, Tencent. Selected for Tencent Rhino-Bird Open Source Talent Cultivation Program

🏅 Honors and Awards

2025

First-class Graduate Academic Scholarship, USTC
National 2nd Prize, “Huawei Cup” China Post-Graduate Mathematical Contest in Modeling

2024

Provincial Bronze Prize, “Challenge Cup” National College Students Entrepreneurship Plan Competition (2024.05)
Outstanding Camper, Tsinghua AIR Winter Camp (2024.03)

2023

Provincial 1st Prize, Huawei ICT Competition (2023.12)
Selected for Tencent Rhino-Bird Open Source Talent Cultivation Program (2023.08)
Provincial 2nd Prize (Captain), Statistical Modeling Competition (2023.08)
3rd Prize, “Diangong Cup” National Mathematical Modeling Contest (2023.07)
Meritorious Winner (Captain), COMAP Mathematical Contest in Modeling (MCM/ICM) (2023.05)
Provincial 3rd Prize, Chinese Collegiate Computing Competition (2023.05)
2nd Prize, “Huazhong Cup” Mathematical Modeling Challenge (2023.05)
1st Prize, The 14th Chinese Mathematics Competitions (CMC) (2023.03)
Outstanding Award (Captain), “HuaShu Cup” International Mathematical Contest in Modeling (2023.01)
1st Prize (Captain), Asia and Pacific Mathematical Contest in Modeling (APMCM) (2023.01)
Scholarships & Titles: Comprehensive A-Level Certificate of Sichuan Province, National Encouragement Scholarship, Guanxin Outstanding Student Scholarship, Huawei Smart Base Scholarship (2023.12).

2022

Provincial 1st Prize (Captain), CUMCM (Contemporary Undergraduate Mathematical Contest in Modeling) (2022.10)
Outstanding Student of Sichuan University (2022.10)