Hello! I am Zhijin Rong (容志谨), an undergraduate student in Mathematics and Applied Mathematics at Ocean University of China. My research interests focus on mathematical principles in machine learning (particularly domain shift problems), image processing and analysis, and biomedical data (computational biology and computational pathology).

I have a strong background in mathematical modeling and scientific computing, having won awards such as the Meritorious Winner in the 2025 MCM/ICM and National Second Prize in the 2025 CUMCM. You can check my Google Scholar profile here

🔥 News

• 2026.05:  🎉🎉 Our paper on “DARE: Domain-Aware Representation Enhancement for Data-Efficient Histopathological Tissue Classification” received a revision invitation from Biomedical Signal Processing and Control (BSPC, JCR Q1).
• 2026.05:  🎉🎉 Awarded Honorable Mention (International Second Prize) in the 2026 Mathematical Contest in Modeling (MCM).
• 2026.04:  🎉🎉 Honored as Outstanding Teaching Assistant of the University (top 1% university-wide) for the course Ordinary Differential Equation.
• 2025.11:  🎉🎉 Awarded National Second Prize in the 2025 National Undergraduate Mathematics Modeling Competition.
• 2025.04:  🎉🎉 Awarded Meritorious Winner (International First Prize) in the 2025 Mathematical Contest in Modeling (ICM).
• 2025.03:  🎉🎉 Our research paper on coastal seafood industry economic impact using the DID-SARIMA model was officially accepted and published in Highlights in Science, Engineering and Technology
• 2024.11:  🎉🎉 Awarded Provincial Second Prize in the 2024 National Undergraduate Mathematics Modeling Competition (Shandong Division).

📝 Publications

BSPC (Revise)

DARE: Domain-Aware Representation Enhancement for Data-Efficient Histopathological Tissue Classification

Zhijin Rong, Xueying Zeng*, J. Zhang, Q. Zhang

Biomedical Signal Processing and Control (Under Revision, 2026)

Project

• Introduced statistical sampling theory to construct a dual-enhancement framework (DARE) to address scarce annotations and high heterogeneity in medical images.

Highl. Sci. Eng. Technol.

A Study on the Impact of Nuclear Pollution Discharge on the Seafood Industry in Coastal Cities Based on the DID-SARIMA Model

Xuan Wang*, Zhijin Rong*, et al.

Highlights in Science, Engineering and Technology, 2025

Paper

• Integrated Difference-in-Differences (DID) causal inference with SARIMA dynamic time-series forecasting to evaluate economic impacts.

🎖 Honors and Awards

• 2026.05 Honorable Mention, Mathematical Contest in Modeling (MCM，2026)
• 2025.11 First-Class Comprehensive University Scholarship & Outstanding Student of the University (2024-2025)
• 2025.11 National Second Prize, National Undergraduate Mathematics Modeling Competition (CUMCM，2025)
• 2025.05 Meritorious Winner, Mathematical Contest in Modeling (ICM，2025)
• 2024.11 First-Class Comprehensive University Scholarship & Outstanding Student of the University (2023-2024)
• 2024.11 Provincial Second Prize, National Undergraduate Mathematics Modeling Competition (CUMCM, 2024)

📖 Educations

• 2023.09 - Present, Ocean University of China (OUC), Qingdao, China.
  • Undergraduate student in Mathematics and Applied Mathematics.

💼 Academic Service

• 2025.03 - 2026.06, Teaching Assistant, Undergraduate second-year courses of OUC, Numerical methods.
• 2025.09 - 2026.02, Teaching Assistant (Outstanding), Undergraduate second-year courses of OUC, Ordinary Differential Equation.

💻 Research Experience

• Elimination of Batch Effects in Viral Abundance Quantification

  Core Member (2026.04 - Present)

  • Applying mathematical and statistical theories, specifically Bayesian estimation and robust regression modeling methodologies, to systematically eliminate batch effects in viral abundance across high-throughput sequencing datasets.

• DARE: Domain-Aware Representation Enhancement for Data-Efficient Histopathological Tissue Classification

  First Author (2025.03 - 2026.04)

  • Developed the DARE dual-enhancement framework using statistical sampling theory, combining image-space low-order statistic perturbation and feature-space pseudo-domain interpolation to resolve domain shift issues under few-shot scenarios. Resulted in a first-author paper currently under revision at Biomedical Signal Processing and Control (JCR Q1).

• Research on the Economic Impact of Coastal Seafood Industry Based on DID-SARIMA Model

  Co-First Author (2023 - 2024)

  • Integrated the Difference-in-Differences (DID) method for policy impact causal inference and utilized the SARIMA model for seasonal time-series dynamic forecasting, quantitatively evaluating the long-term economic effects of nuclear wastewater discharge on the regional coastal seafood industry. Resulted in a co-first-author publication in Highlights in Science, Engineering and Technology.