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Raphael Cousin

PROFILE

Raphael Cousin

Racousin developed and maintained robust data science workflows in the racousin/data_science_practice_2024 and racousin/data_science_practice_2025 repositories, focusing on automated testing, CI/CD reliability, and data governance. They engineered end-to-end test pipelines using Python and Shell scripting, integrating AWS S3 for data handling and validation. Their work included building mAP evaluation tools for object detection, refining test result loading, and automating validation cycles to reduce manual intervention. By improving repository hygiene and version control practices, Racousin enhanced maintainability and onboarding. The technical depth is evident in their approach to error handling, configuration management, and performance optimization across evolving project requirements.

Overall Statistics

Feature vs Bugs

56%Features

Repository Contributions

46Total
Bugs
8
Commits
46
Features
10
Lines of code
9,195
Activity Months4

Work History

October 2025

9 Commits • 3 Features

Oct 1, 2025

October 2025: Delivered end-to-end evaluation and testing capabilities, strengthened CI reliability, and cleaned up repository hygiene. Key outcomes span two repositories and focus on measurable business value and technical excellence: - Mean Average Precision (mAP) evaluation tooling and dataset for Module7: introduced a dedicated mAP computation script, integrated with tests, and prepared a predictions.csv data workflow aligned for evaluation of object-detection performance. - Module 8 automated testing pipeline for Exercise 3: added automated testing workflow including target downloads, prediction comparisons, JSON result generation, and management of virtual environments to ensure reproducible tests. - Repository cleanup: removed stray file from Module1 to restore repository hygiene and avoid future confusion. - Test suite hardening for Module7: refinements to test naming, thresholds, and pushed-user handling to stabilize CI results and reduce flakiness. - Cross-repo CI reliability enhancements: incorporated CI reliability improvements from the 2024 project (missing student template handling, robust environment/S3 error handling, and artifact cleanup) to further reduce CI failures and improve integration velocity.

September 2025

32 Commits • 4 Features

Sep 1, 2025

September 2025 monthly summary for racousin/data_science_practice_2025. Focused on establishing a solid project foundation, stabilizing the CI/CD pipeline, and incrementally improving the codebase while enabling new data workflows. Delivered a mix of foundational scaffolding, feature enhancements, and targeted bug fixes that collectively improve developer velocity, code quality, and reliability of automated builds. Key highlights include the following sections below.

March 2025

1 Commits

Mar 1, 2025

March 2025 monthly summary for racousin/data_science_practice_2024: Focused on stabilizing test execution for Module 8 and strengthening repository hygiene to improve reliability and developer productivity.

November 2024

4 Commits • 3 Features

Nov 1, 2024

November 2024 delivered three core features in racousin/data_science_practice_2024 that strengthen testing reliability, automate validation workflows, and improve data governance. The work produced a more stable testing suite, reproducible validation for Module 7/8, and ensured critical data assets are tracked in version control. This accelerates feedback loops, reduces manual debugging, and enhances governance for data assets.

Activity

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Quality Metrics

Correctness79.2%
Maintainability79.8%
Architecture73.6%
Performance75.2%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashCSVGitJinja2NonePytestPythonSQLShellText

Technical Skills

AWSAWS CLIAWS S3Boto3CI/CDCloudFrontConfigurationConfiguration ManagementData EntryData HandlingData ManagementData ScienceData ValidationDebuggingError Handling

Repositories Contributed To

2 repos

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

racousin/data_science_practice_2025

Sep 2025 Oct 2025
2 Months active

Languages Used

BashGitJinja2NonePytestPythonSQLShell

Technical Skills

AWSAWS CLIAWS S3Boto3CI/CDCloudFront

racousin/data_science_practice_2024

Nov 2024 Oct 2025
3 Months active

Languages Used

BashGitPythonSQLShell

Technical Skills

AWSAWS S3CI/CDData HandlingData ValidationDebugging

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