AliceO2Group/O2Physics
Jan 2025 – Jan 2026
10 Months active
Languages Used
C++CMakeMarkdownPythonJSON
Technical Skills
C++Data AnalysisHeavy Flavor PhysicsParticle ReconstructionSoftware EngineeringHigh Energy Physics
Oleksii Lubynets
PROFILE
Oleksii Lubynets
Oleh Lubynets developed and enhanced core analysis workflows for the AliceO2Group/O2Physics repository, focusing on heavy-flavor physics reconstruction and data analysis. He implemented KFParticle-based reconstruction for 3-prong decays, integrated machine learning scoring, and refactored key components to improve maintainability and memory management. Using C++ and Python, he introduced new data structures, configurable analysis axes, and robust error handling, while optimizing algorithms for both Monte Carlo and real data. His work addressed both feature development and critical bug fixes, resulting in more reliable, flexible, and efficient analysis pipelines that support advanced physics studies and future extensibility.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
21Total
Bugs
4
Commits
21
Features
16
Lines of code
11,269
Activity Months10
Your Network
141 people
Work History
January 2026
3 Commits • 2 Features
Jan 1, 2026January 2026 performance summary for AliceO2Group/O2Physics. Focused on delivering measurable improvements to data processing efficiency, memory management, and code quality across core analysis paths. Completed targeted refactoring and metric-enhanced data path enhancements while stabilizing critical reconstruction components.
3 Commits • 2 Features
Jan 1, 2026January 2026 performance summary for AliceO2Group/O2Physics. Focused on delivering measurable improvements to data processing efficiency, memory management, and code quality across core analysis paths. Completed targeted refactoring and metric-enhanced data path enhancements while stabilizing critical reconstruction components.
January 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Delivered ML scoring and task configuration enhancements in O2Physics, consolidating FillMl handling and introducing separate configurable axes for BDT score prompts and non-prompts in HfTaskLc. The work included refactoring to remove code duplication, improving reliability and configurability of the ML scoring pipeline, and establishing groundwork for more flexible ML experiments.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Delivered ML scoring and task configuration enhancements in O2Physics, consolidating FillMl handling and introducing separate configurable axes for BDT score prompts and non-prompts in HfTaskLc. The work included refactoring to remove code duplication, improving reliability and configurability of the ML scoring pipeline, and establishing groundwork for more flexible ML experiments.
November 2025
2 Commits
Nov 1, 20252025-11 Monthly summary for AliceO2Group/O2Physics: Stability and correctness driven month focused on bug fixes in core data processing; no new user-facing features released; two high-priority fixes implemented to harden the processing pipeline and prevent runtime crashes. This month delivered stronger input validation, safer data handling, and improved maintainability.
2 Commits
Nov 1, 20252025-11 Monthly summary for AliceO2Group/O2Physics: Stability and correctness driven month focused on bug fixes in core data processing; no new user-facing features released; two high-priority fixes implemented to harden the processing pipeline and prevent runtime crashes. This month delivered stronger input validation, safer data handling, and improved maintainability.
November 2025
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 (2025-10) highlights two major refactors in AliceO2Group/O2Physics that improve maintainability and extendability of the analysis workflow. No major bug fixes were deployed this month. The work strengthens code organization, prepares for future features, and demonstrates solid software engineering practices across data/MC processing, histogram handling, and templated utilities.
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 (2025-10) highlights two major refactors in AliceO2Group/O2Physics that improve maintainability and extendability of the analysis workflow. No major bug fixes were deployed this month. The work strengthens code organization, prepares for future features, and demonstrates solid software engineering practices across data/MC processing, histogram handling, and templated utilities.
September 2025
3 Commits • 2 Features
Sep 1, 2025In September 2025, the O2Physics work focused on strengthening physics analysis reliability and data quality through targeted bug fixes and new analysis features in the Lc and Omega decay chains. The team emphasized clean, reusable patterns and configurability to support robust future analyses.
3 Commits • 2 Features
Sep 1, 2025In September 2025, the O2Physics work focused on strengthening physics analysis reliability and data quality through targeted bug fixes and new analysis features in the Lc and Omega decay chains. The team emphasized clean, reusable patterns and configurability to support robust future analyses.
September 2025
July 2025
2 Commits • 2 Features
Jul 1, 2025July 2025 – AliceO2Group/O2Physics: Key feature deliveries and quality improvements focused on robust analysis, clearer outputs, and expanded validation capabilities. Delivered two major enhancements: Flexible cut variation analysis and HFInvMassFitter enhancements with background sideband chi-squared metric. These changes improve analysis flexibility across pt bins, provide clearer histogram outputs, and introduce a quantitative metric for background validation, enabling more reliable physics conclusions and streamlined workflows.
July 2025
2 Commits • 2 Features
Jul 1, 2025July 2025 – AliceO2Group/O2Physics: Key feature deliveries and quality improvements focused on robust analysis, clearer outputs, and expanded validation capabilities. Delivered two major enhancements: Flexible cut variation analysis and HFInvMassFitter enhancements with background sideband chi-squared metric. These changes improve analysis flexibility across pt bins, provide clearer histogram outputs, and introduce a quantitative metric for background validation, enabling more reliable physics conclusions and streamlined workflows.
June 2025
3 Commits • 3 Features
Jun 1, 2025June 2025: Delivered three major enhancements in O2Physics that improve data quality, analysis efficiency, and deployment ease: (1) ML-assisted LcToPKPi reconstruction with KFParticle-based selection; ML features added and scores stored to boost reconstruction accuracy and downstream analyses; (2) PWGHF cut-variation plotting enhancements with robust error handling for missing histograms, refined outputs, and clearer titles; (3) HFInvMassFitter standalone executable with main(), CMakeLists, and README to enable ROOT macro or compiled usage, easing integration.
3 Commits • 3 Features
Jun 1, 2025June 2025: Delivered three major enhancements in O2Physics that improve data quality, analysis efficiency, and deployment ease: (1) ML-assisted LcToPKPi reconstruction with KFParticle-based selection; ML features added and scores stored to boost reconstruction accuracy and downstream analyses; (2) PWGHF cut-variation plotting enhancements with robust error handling for missing histograms, refined outputs, and clearer titles; (3) HFInvMassFitter standalone executable with main(), CMakeLists, and README to enable ROOT macro or compiled usage, easing integration.
June 2025
May 2025
2 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on key developer accomplishments for the AliceO2Group/O2Physics repository. Highlights include delivered features, major quality improvements, and the demonstration of critical skills that drive maintainability and analytical capabilities. Emphasis on business value and technical excellence.
May 2025
2 Commits • 2 Features
May 1, 2025Concise monthly summary for 2025-05 focusing on key developer accomplishments for the AliceO2Group/O2Physics repository. Highlights include delivered features, major quality improvements, and the demonstration of critical skills that drive maintainability and analytical capabilities. Emphasis on business value and technical excellence.
April 2025
1 Commits • 1 Features
Apr 1, 2025In 2025-04, delivered KFParticle-based reconstruction for 3-prong decays in AliceO2Group/O2Physics, improving the precision of Lc candidate selection and expanding analysis capabilities for charm-baryon studies. Added new configurations and cut variables to support KFParticle-specific selections, and refined data storage and processing for both MC and real data to enable more detailed Lc analyses. This work strengthens physics reach, enables more robust lifetime and decay-property measurements, and sets the foundation for further systematic studies.
1 Commits • 1 Features
Apr 1, 2025In 2025-04, delivered KFParticle-based reconstruction for 3-prong decays in AliceO2Group/O2Physics, improving the precision of Lc candidate selection and expanding analysis capabilities for charm-baryon studies. Added new configurations and cut variables to support KFParticle-specific selections, and refined data storage and processing for both MC and real data to enable more detailed Lc analyses. This work strengthens physics reach, enables more robust lifetime and decay-property measurements, and sets the foundation for further systematic studies.
April 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025Month: 2025-01 — Focused on expanding heavy-flavor reconstruction capabilities in the PWGHF framework within O2Physics by introducing KFParticle-based reconstruction for 3-prong decays. Delivered a new reconstruction pathway with dedicated data structures and processing logic to store and analyze KFParticle-derived kinematics, providing an alternative to the existing DCAFitter and enabling richer heavy-flavor analyses. Prepared for physics validation and performance evaluation. Major bugs fixed: None reported this month. Overall impact and accomplishments: Enhanced analytical capability for heavy-flavor physics, enabling broader analysis options, more robust kinematic reconstruction, and improved flexibility in PWGHF workflows. Strengthened repository integration (AliceO2Group/O2Physics) and set the stage for further optimization and physics validation. Technologies/skills demonstrated: KFParticle reconstruction integration, PWGHF framework extension, new data structures for KFParticle-based kinematics, C++ development, version control and code review readiness (commit 3a0382b9cca4b3a8efa80a7cc4b37526bda0e36f; PR #9211).
January 2025
1 Commits • 1 Features
Jan 1, 2025Month: 2025-01 — Focused on expanding heavy-flavor reconstruction capabilities in the PWGHF framework within O2Physics by introducing KFParticle-based reconstruction for 3-prong decays. Delivered a new reconstruction pathway with dedicated data structures and processing logic to store and analyze KFParticle-derived kinematics, providing an alternative to the existing DCAFitter and enabling richer heavy-flavor analyses. Prepared for physics validation and performance evaluation. Major bugs fixed: None reported this month. Overall impact and accomplishments: Enhanced analytical capability for heavy-flavor physics, enabling broader analysis options, more robust kinematic reconstruction, and improved flexibility in PWGHF workflows. Strengthened repository integration (AliceO2Group/O2Physics) and set the stage for further optimization and physics validation. Technologies/skills demonstrated: KFParticle reconstruction integration, PWGHF framework extension, new data structures for KFParticle-based kinematics, C++ development, version control and code review readiness (commit 3a0382b9cca4b3a8efa80a7cc4b37526bda0e36f; PR #9211).
Activity
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Quality Metrics
Correctness90.0%
Maintainability84.8%
Architecture83.8%
Performance77.2%
AI Usage22.0%
Skills & Technologies
Programming Languages
C++CMakeJSONMarkdownPython
Technical Skills
Build System ConfigurationC++C++ DevelopmentC++ developmentData AnalysisDebuggingDocumentationHeavy Flavor PhysicsHigh Energy PhysicsHistogrammingMachine LearningParticle PhysicsParticle ReconstructionPhysics AnalysisPhysics Simulation
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