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jeongje-lee

PROFILE

Jeongje-lee

Jongjin Lee developed a suite of machine learning notebooks and data pipelines for the KU-BIG/KUBIG_2024_FALL and KU-BIG/KUBIG_2025_SPRING repositories, focusing on reproducible workflows and collaborative research. He built end-to-end solutions for binary and image classification, speech recognition, and tabular data analysis, employing Python, Jupyter Notebook, and libraries such as Scikit-learn and Keras. His work included robust data preprocessing, feature engineering, and ensemble modeling, enabling scalable experimentation and knowledge sharing. By cleaning outdated materials and improving documentation, Jongjin established a solid foundation for future model development, accelerating onboarding and ensuring consistent, high-quality machine learning research practices.

Overall Statistics

Feature vs Bugs

90%Features

Repository Contributions

13Total
Bugs
1
Commits
13
Features
9
Lines of code
3,222
Activity Months2

Work History

January 2025

1 Commits • 1 Features

Jan 1, 2025

Month: 2025-01. Summary of work for KU-BIG/KUBIG_2025_SPRING focusing on delivered features, bug fixes, impact, and skills demonstrated. Key feature delivered: Red Wine Quality Classification Notebook for ML study, added as part of an ML exploration workflow. No major bugs fixed this month. The work established a reproducible ML study foundation, enabling faster experimentation, feature engineering, and knowledge sharing. Technologies demonstrated include Python, Jupyter notebooks, data loading, EDA, data distribution checks, correlation analysis, and Git-based version control.

December 2024

12 Commits • 8 Features

Dec 1, 2024

December 2024—KU-BIG/KUBIG_2024_FALL: Delivered foundational ML notebooks, data preprocessing pipelines, and scaffolding for ongoing research initiatives. Focused on business value through rapid prototyping, reproducibility, and collaboration readiness. Notable work includes binary classification and image classification notebooks, Week 5 tabular data scaffolding, data preprocessing/feature engineering, and a speech recognition notebook. A cleanup removed outdated Week 5 tabular material to reduce confusion and maintain repository hygiene. This set the stage for repeatable experiments, cross-team collaboration, and scalable model development in 2025.

Activity

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Quality Metrics

Correctness64.6%
Maintainability64.6%
Architecture64.6%
Performance61.4%
AI Usage21.4%

Skills & Technologies

Programming Languages

Jupyter NotebookPythonSQL

Technical Skills

CNNCatBoostCross-validationData AnalysisData CleaningData PreprocessingData VisualizationDeep LearningExploratory Data AnalysisFeature EngineeringImage ClassificationJupyter NotebookKerasLightGBMLogistic Regression

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

KU-BIG/KUBIG_2024_FALL

Dec 2024 Dec 2024
1 Month active

Languages Used

Jupyter NotebookPythonSQL

Technical Skills

CNNCatBoostCross-validationData AnalysisData CleaningData Preprocessing

KU-BIG/KUBIG_2025_SPRING

Jan 2025 Jan 2025
1 Month active

Languages Used

Python

Technical Skills

Data AnalysisExploratory Data AnalysisJupyter NotebookMachine LearningMatplotlibPandas

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