AliceO2Group/O2Physics
May 2025 – Mar 2026
5 Months active
Languages Used
C++
Technical Skills
C++ DevelopmentData AnalysisHigh Energy PhysicsParticle PhysicsPhysics AnalysisC++ programming
YazhenLin
PROFILE
Yazhenlin
Yalin contributed to the AliceO2Group/O2Physics repository by developing and enhancing analysis modules for high energy and particle physics studies. Over five months, Yalin built features such as the energy correlator analysis module, extending it with new histograms, configuration options, and robust event selection logic. Using C++ and scientific computing techniques, Yalin improved data filtering to increase result reliability and maintainability, refining algorithms to process only relevant physical particles. The work included debugging complex analysis workflows, optimizing code for performance, and aligning Pb-Pb and pp analysis paths, resulting in more accurate, configurable, and production-ready physics analysis pipelines.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
15Total
Bugs
3
Commits
15
Features
4
Lines of code
4,099
Activity Months5
Your Network
463 peopleSame Organization
@cern.ch324
Shared Repositories
139
Work History
March 2026
4 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for AliceO2Group/O2Physics: Key feature delivered — Energy Correlator Analysis Module with initial capabilities to compute energy correlations between dileptons and hadrons, with ongoing enhancements for particle-type checks, refined event selection, lepton containment options, and improved histograms. Major bug fixed — corrected event selection errors in the energy correlator workflow, removed unnecessary dependencies, and streamlined the analysis pipeline for reliability and performance. Overall impact — improved reliability and performance of energy-correlator analysis, enabling more accurate physics insights and faster production runs. Technologies/skills — C++ module development (dqEnergyCorrelator_direct.cxx), code maintenance, Git-driven collaboration, and performance-oriented refinements.
4 Commits • 1 Features
Mar 1, 2026March 2026 monthly summary for AliceO2Group/O2Physics: Key feature delivered — Energy Correlator Analysis Module with initial capabilities to compute energy correlations between dileptons and hadrons, with ongoing enhancements for particle-type checks, refined event selection, lepton containment options, and improved histograms. Major bug fixed — corrected event selection errors in the energy correlator workflow, removed unnecessary dependencies, and streamlined the analysis pipeline for reliability and performance. Overall impact — improved reliability and performance of energy-correlator analysis, enabling more accurate physics insights and faster production runs. Technologies/skills — C++ module development (dqEnergyCorrelator_direct.cxx), code maintenance, Git-driven collaboration, and performance-oriented refinements.
March 2026
February 2026
1 Commits
Feb 1, 2026February 2026 (AliceO2Group/O2Physics): Delivered a critical data-quality improvement for energy correlator analysis by refining data filtering to process only physical primary particles and exclude tracks with specific mother particles. This enhancement reduces contamination in the energy correlator study, increases result reliability, and improves the signal-to-noise ratio for physics conclusions. All changes are traceable to commit c0362746436fce97586ea5dce33898644902fdd1 and PR [PWGDQ] Change some code for the energy correlator study (#15114).
February 2026
1 Commits
Feb 1, 2026February 2026 (AliceO2Group/O2Physics): Delivered a critical data-quality improvement for energy correlator analysis by refining data filtering to process only physical primary particles and exclude tracks with specific mother particles. This enhancement reduces contamination in the energy correlator study, increases result reliability, and improves the signal-to-noise ratio for physics conclusions. All changes are traceable to commit c0362746436fce97586ea5dce33898644902fdd1 and PR [PWGDQ] Change some code for the energy correlator study (#15114).
January 2026
6 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for AliceO2Group/O2Physics: Delivered energy correlator analysis enhancements including new histograms, expanded configuration options, VarManager logic for random phi transformations, transverse-range parameters, and dilepton fill logic. The work spans multiple commits and consolidates improvements to robustness, configurability, and analysis accuracy, enabling faster iteration and more reliable physics results.
6 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for AliceO2Group/O2Physics: Delivered energy correlator analysis enhancements including new histograms, expanded configuration options, VarManager logic for random phi transformations, transverse-range parameters, and dilepton fill logic. The work spans multiple commits and consolidates improvements to robustness, configurability, and analysis accuracy, enabling faster iteration and more reliable physics results.
January 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 – AliceO2Group/O2Physics: Delivered substantial energy correlator analysis capabilities, expanding histograms and analysis functions, and updated analysis variables. Streamlined the codebase by removing obsolete variables, improving maintainability and readiness for PWGDQ energy-correlation studies. No major bug fixes were recorded this month for this repository. Business value: enables more precise energy-correlator physics analyses, faster iteration cycles, and clearer data-driven insights while reducing technical debt. Technologies/skills demonstrated: C++ within the O2Physics framework, histogram-based analysis, code refactoring, variable management, and collaborative PWGDQ workflow.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 – AliceO2Group/O2Physics: Delivered substantial energy correlator analysis capabilities, expanding histograms and analysis functions, and updated analysis variables. Streamlined the codebase by removing obsolete variables, improving maintainability and readiness for PWGDQ energy-correlation studies. No major bug fixes were recorded this month for this repository. Business value: enables more precise energy-correlator physics analyses, faster iteration cycles, and clearer data-driven insights while reducing technical debt. Technologies/skills demonstrated: C++ within the O2Physics framework, histogram-based analysis, code refactoring, variable management, and collaborative PWGDQ workflow.
May 2025
2 Commits • 1 Features
May 1, 2025May 2025 monthly summary for O2Physics: Delivered Pb-Pb Strangeness Correlation Analysis extension and resolved critical analysis logic bugs, strengthening Pb-Pb physics capabilities and data quality. Implemented V0 and cascade analysis in Pb-Pb data with new configurations and selection criteria, aligning with existing pp workflows for cross-system comparisons. Fixed logical errors in hStrangeCorrelation.cxx and hStrangeCorrelationFilter.cxx to correct collision selection and simplify analysis conditions, improving data filtering reliability.
2 Commits • 1 Features
May 1, 2025May 2025 monthly summary for O2Physics: Delivered Pb-Pb Strangeness Correlation Analysis extension and resolved critical analysis logic bugs, strengthening Pb-Pb physics capabilities and data quality. Implemented V0 and cascade analysis in Pb-Pb data with new configurations and selection criteria, aligning with existing pp workflows for cross-system comparisons. Fixed logical errors in hStrangeCorrelation.cxx and hStrangeCorrelationFilter.cxx to correct collision selection and simplify analysis conditions, improving data filtering reliability.
May 2025
Activity
Loading activity data...
Quality Metrics
Correctness82.6%
Maintainability80.6%
Architecture82.0%
Performance80.0%
AI Usage21.4%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ DevelopmentC++ programmingData AnalysisHigh Energy PhysicsParticle PhysicsPhysics AnalysisPhysics Simulationalgorithm developmentalgorithm optimizationdata analysishistogram managementparticle physicsparticle physics analysisscientific computing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline