OpenSTEF/openstef
Dec 2024 – Dec 2025
7 Months active
Languages Used
PythonYAMLSQL
Technical Skills
CI/CDCode FormattingGitHub ActionsPythonData EngineeringMachine Learning
Bart Pleiter
PROFILE
Bart Pleiter
Over seven months, contributed to OpenSTEF/openstef by building features and resolving bugs across data science, backend, and CI/CD domains. Developed quantile regression models and enhanced the Flatliner model with median-based predictions, improving forecast accuracy for real-world load profiles. Improved code quality and reliability by updating GitHub Actions workflows, integrating Black formatting, and pinning dependencies for deterministic builds. Introduced a configurable logging system using Python and YAML, enabling flexible diagnostics and centralized management. Enhanced project documentation and citation metadata, including automated validation workflows. Addressed MLflow compatibility issues and streamlined organizational communications, demonstrating a methodical approach to maintainability and cross-team collaboration.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
8Total
Bugs
2
Commits
8
Features
6
Lines of code
1,935
Activity Months7
Your Network
35 peopleWork History
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Delivered median-based predictions for the Flatliner model in OpenSTEF/openstef, achieving more accurate forecasts in non-zero flatliner scenarios. Introduced an option for non-zero flatliner prediction and switched the computation from mean to median. Updated the core implementation and formatting to improve code quality and maintainability. These changes enhance forecast reliability for real-world load profiles and demonstrate the team's ability to implement robust, data-driven improvements with clear collaboration.
1 Commits • 1 Features
Dec 1, 2025December 2025: Delivered median-based predictions for the Flatliner model in OpenSTEF/openstef, achieving more accurate forecasts in non-zero flatliner scenarios. Introduced an option for non-zero flatliner prediction and switched the computation from mean to median. Updated the core implementation and formatting to improve code quality and maintainability. These changes enhance forecast reliability for real-world load profiles and demonstrate the team's ability to implement robust, data-driven improvements with clear collaboration.
December 2025
November 2025
2 Commits
Nov 1, 2025November 2025 (OpenSTEF/openstef) focused on stabilizing telemetry and improving communications through two critical bug fixes. Delivered MLflow Logging Compatibility Fix to support MLflow 3.0+ by making the step argument conditional on the MLflow version and updating related serializer logic. Also updated organizational email addresses across project files to reflect the new lfenergy domain, enhancing external communications and onboarding. These changes reduce runtime logging errors, improve reliability of metrics, and improve maintainability and cross-team collaboration.
November 2025
2 Commits
Nov 1, 2025November 2025 (OpenSTEF/openstef) focused on stabilizing telemetry and improving communications through two critical bug fixes. Delivered MLflow Logging Compatibility Fix to support MLflow 3.0+ by making the step argument conditional on the MLflow version and updating related serializer logic. Also updated organizational email addresses across project files to reflect the new lfenergy domain, enhancing external communications and onboarding. These changes reduce runtime logging errors, improve reliability of metrics, and improve maintainability and cross-team collaboration.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered a focused feature to enrich citation metadata in OpenSTEF/openstef by updating CITATION.cff to include new authors and a DOI, enhancing citation accuracy and discoverability. No major bugs reported this month; maintenance tasks centered on metadata governance and tooling alignment.
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered a focused feature to enrich citation metadata in OpenSTEF/openstef by updating CITATION.cff to include new authors and a DOI, enhancing citation accuracy and discoverability. No major bugs reported this month; maintenance tasks centered on metadata governance and tooling alignment.
July 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 – OpenSTEF/openstef: Implemented CITATION.cff integration and automated validation workflow; enhanced licensing compliance; established CI-driven governance of citation metadata; minor code hygiene updates. Commit 0e6d3c346dc5f81b10e03e9fef77e4d4118bd395.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 – OpenSTEF/openstef: Implemented CITATION.cff integration and automated validation workflow; enhanced licensing compliance; established CI-driven governance of citation metadata; minor code hygiene updates. Commit 0e6d3c346dc5f81b10e03e9fef77e4d4118bd395.
March 2025
1 Commits • 1 Features
Mar 1, 2025OpenSTEF/openstef – 2025-03 Monthly Summary: Delivered a Configurable Logging System (Factory-based Logger) with appsettings-driven configuration, enabling custom loggers (standard logging, structlog) and centralized management. Included minor CI cache upgrades to improve build reliability. Impact: enhanced observability, easier diagnostics, and a scalable logging strategy across components.
1 Commits • 1 Features
Mar 1, 2025OpenSTEF/openstef – 2025-03 Monthly Summary: Delivered a Configurable Logging System (Factory-based Logger) with appsettings-driven configuration, enabling custom loggers (standard logging, structlog) and centralized management. Included minor CI cache upgrades to improve build reliability. Impact: enhanced observability, easier diagnostics, and a scalable logging strategy across components.
March 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered a new quantile regression model type (GBLinearQuantileOpenstfRegressor) with end-to-end integration in OpenSTEF/openstef, including config options and unit tests. This expands modeling flexibility for quantile forecasts and strengthens the framework's regression capabilities.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered a new quantile regression model type (GBLinearQuantileOpenstfRegressor) with end-to-end integration in OpenSTEF/openstef, including config options and unit tests. This expands modeling flexibility for quantile forecasts and strengthens the framework's regression capabilities.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 (OpenSTEF/openstef): Delivered key enhancements to code quality and CI/CD reliability. Updated GitHub Actions workflows to use newer versions of actions, integrated Black code formatting with review suggestions, and pinned specific versions of scikit-learn and Black to ensure deterministic builds and consistent behavior. These changes reduce build failures, standardize code quality, and speed up onboarding by providing clear feedback in pull requests. Primary commit 670a8e757ca995008e396672d2864c1d82a30a0a updated the Black GitHub Action to emphasize review suggestions, enabling earlier detection of formatting issues.
1 Commits • 1 Features
Dec 1, 2024December 2024 (OpenSTEF/openstef): Delivered key enhancements to code quality and CI/CD reliability. Updated GitHub Actions workflows to use newer versions of actions, integrated Black code formatting with review suggestions, and pinned specific versions of scikit-learn and Black to ensure deterministic builds and consistent behavior. These changes reduce build failures, standardize code quality, and speed up onboarding by providing clear feedback in pull requests. Primary commit 670a8e757ca995008e396672d2864c1d82a30a0a updated the Black GitHub Action to emphasize review suggestions, enabling earlier detection of formatting issues.
December 2024
Activity
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Quality Metrics
Correctness91.2%
Maintainability85.0%
Architecture86.2%
Performance77.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
PythonSQLYAML
Technical Skills
CI/CDCode FormattingConfiguration ManagementData EngineeringDocumentationGitHub ActionsLoggingMLflowMachine LearningPythonPython DevelopmentQuantile RegressionRefactoringRegressionSoftware Design
Repositories Contributed To
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