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Jungmin Park

PROFILE

Jungmin Park

Over seven months, Jeongmin Bak developed analytics and reporting features across the Hyubbbb/Daily_SQL and team-epoch/EPOCH_4th_TASK repositories, focusing on SQL-driven data integration, machine learning, and visualization. Jeongmin engineered predictive analytics notebooks in Python and Jupyter, applying scikit-learn and statsmodels for model training and evaluation, while also building reusable SVG visualization assets. In SQL, Jeongmin unified sales data, enhanced catalog and animal tracking queries, and improved code readability and maintainability. The work enabled robust data-driven decision making, streamlined reporting, and improved operational visibility, demonstrating depth in data analysis, database management, and the practical application of machine learning techniques.

Overall Statistics

Feature vs Bugs

95%Features

Repository Contributions

88Total
Bugs
2
Commits
88
Features
35
Lines of code
260,060
Activity Months7

Work History

February 2026

9 Commits • 4 Features

Feb 1, 2026

February 2026 performance summary for Hyubbbb/Daily_SQL: Delivered four data-analytics enhancements across SQL, reporting, and talent visibility. Refactored and documented SQL for readability and correct year/month ordering, reducing maintenance burden and avoiding ordering errors. Extended reporting with offline sales aggregation and age-group demographics for 2021, enabling targeted business insights. Improved animal data visibility by ordering records and exposing earliest animal name, supporting operational reporting. Expanded talent analytics by exposing front-end skill indicators and aggregated C#/Python talent metrics, enabling smarter team planning.

January 2026

14 Commits • 4 Features

Jan 1, 2026

January 2026 performance highlights for Hyubbbb/Daily_SQL: Delivered substantial SQL-centric enhancements across catalog, analytics, and movement data, plus team-resource planning improvements and code hygiene. Key outcomes include: 1) Book Catalog Management enabling category-based retrieval of books and authors; 2) Data Analytics and Reporting Enhancements unlocking dashboards with queries across products, purchases, users, and cars; 3) Animal Movement Tracking and Data Integrity improvements for inflow/outflow timing, recent entries, duplicates, and types; 4) Developer Information by Skill Set to support smarter staffing; 5) Maintenance and Code Hygiene fixes improving readability and maintainability. Cumulative commits span 14 changes across five features and one bug fix. Impact: measurable uplift in search accuracy, data-driven decision capabilities, data quality, and team efficiency. Technologies: SQL, data analysis, query design, data integrity checks, code refactoring.

December 2025

3 Commits • 3 Features

Dec 1, 2025

2025-12 Monthly Developer Summary for Hyubbbb/Daily_SQL: Delivered three SQL analytics features enabling data-driven decision making and operational insights. Focused on robust data retrieval, aggregation, and ranking capabilities with clear commit traceability. No explicit critical bug fixes were logged this month; emphasis was on feature delivery and data quality improvements. Stakeholders gain improved analytics for route planning, performance evaluation, and data integrity.

November 2025

19 Commits • 7 Features

Nov 1, 2025

November 2025 — Hyubbbb/Daily_SQL: Delivered 8 features and several query maintenance tasks across shelter operations, sales analytics, and inventory visibility. Key features include neuter status reporting, partial-name search across animals, rental analytics with discounts and durations, CT-based sales reporting with corrected calculations, and fish statistics analytics. Also implemented basic search and rankings to support decision making and operations. Performance and business value improved via maintainable SQL and scalable reporting.

October 2025

17 Commits • 7 Features

Oct 1, 2025

October 2025 — Delivered a set of data-analytics features in Hyubbbb/Daily_SQL that unify sales data, improve SQL quality, and enable cross-domain analytics. The work creates a single source of truth for March sales, reduces future maintenance effort through disciplined code hygiene, and delivers ready-to-use analytics modules across operational, biology, and asset datasets. The initiatives support data-driven decision making, faster reporting, and scalable query patterns for future quarters.

September 2025

21 Commits • 7 Features

Sep 1, 2025

September 2025 performance summary: Delivered a robust ML education portfolio and a streamlined SQL maintenance suite across two repositories, driving hands-on analytics capabilities and reliable data access for reporting and decision-making.

August 2025

5 Commits • 3 Features

Aug 1, 2025

August 2025 performance summary for team-epoch/EPOCH_4th_TASK: Focused on delivering core analytics capabilities and visualization assets, strengthening predictive modeling and data storytelling for stakeholders. Delivered a predictive analytics notebook for insurance premiums with linear regression and alternatives, enhanced notebook maintenance with extensive SVG visualizations, and created an SVG Visualization Asset Library for Educational Metrics. These efforts improved modeling rigor, reproducibility, and the speed of data-driven decision-making across pricing, education metrics reporting, and dashboard-ready visual assets.

Activity

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Quality Metrics

Correctness93.4%
Maintainability91.8%
Architecture91.2%
Performance91.0%
AI Usage21.2%

Skills & Technologies

Programming Languages

JSONJupyter NotebookPythonSQLSVG

Technical Skills

Data AnalysisData CleaningData EngineeringData IntegrationData PreprocessingData VisualizationDatabaseDatabase ManagementDatabase QueryingDecision TreesExploratory Data Analysis (EDA)Feature EngineeringFile ManagementGeopyHistGradientBoostingRegressor

Repositories Contributed To

2 repos

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

Hyubbbb/Daily_SQL

Sep 2025 Feb 2026
6 Months active

Languages Used

SQL

Technical Skills

DatabaseDatabase QueryingFile ManagementSQLSQL FormattingData Analysis

team-epoch/EPOCH_4th_TASK

Aug 2025 Sep 2025
2 Months active

Languages Used

Jupyter NotebookPythonSVGJSON

Technical Skills

Data AnalysisData VisualizationJupyter NotebookJupyter NotebooksLinear RegressionMachine Learning

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