AliceO2Group/O2Physics
Jan 2025 – Mar 2026
4 Months active
Languages Used
C++
Technical Skills
C++ DevelopmentData AnalysisMachine Learning Feature EngineeringParticle PhysicsSoftware DevelopmentBug Fixing
JaeYoonCHO
PROFILE
Jaeyooncho
Contributed to the AliceO2Group/O2Physics repository by developing and enhancing data analysis features for particle physics workflows over four months. Built new C++ modules to enrich PWGHF and XicToXiPiPi analyses, including adding decay length metadata and integrating machine learning scores into data pipelines. Improved data quality and reliability by implementing robust handling of ML probability vectors and fixing critical bugs affecting data reconstruction. Leveraged C++ and ROOT to extend treeCreator functionality, enabling more precise signal discrimination and streamlined ML experiments. Focused on maintainable code and workflow management, the work strengthened both the physics analysis infrastructure and machine learning readiness.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
4
Lines of code
341
Activity Months4
Your Network
492 peopleSame Organization
@cern.ch347
Shared Repositories
145
dyx-11Member
胡晓宇(Xiaoyu Hu)Member
Fan-CaoMember
XInxiang.LiuMember
FDUEnrichMember
CyF1rmianaMember
gengjiabin12Member
amaringarciaMember
abilandzMember
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 – Key development momentum in O2Physics. Delivered Machine Learning Scores Integration in treeCreator for Xic to XiPiPi analysis, adding new columns and processing functions to enable ML-ready data pipelines. This work strengthens the data structure for ML studies and accelerates ML experiments within the O2Physics repository.
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 – Key development momentum in O2Physics. Delivered Machine Learning Scores Integration in treeCreator for Xic to XiPiPi analysis, adding new columns and processing functions to enable ML-ready data pipelines. This work strengthens the data structure for ML studies and accelerates ML experiments within the O2Physics repository.
March 2026
August 2025
1 Commits • 1 Features
Aug 1, 20252025-08: Delivered XicToXiPiPi Decay Length Analysis Extension in AliceO2Group/O2Physics, adding a new DecayLengthMcGen column to store the decay length of generated particles for non-prompt charm hadrons originating from b quarks. This enriches the XicToXiPiPi analysis with richer decay information, enabling improved signal/background discrimination and more precise physics measurements. Implemented as part of commit cf8b32d953b1962abf45b8a68610768885d3539f ("[PWGHF] XicToXiPiPi: Add DecayLengthMcGen column"), linked to PR #12627.
August 2025
1 Commits • 1 Features
Aug 1, 20252025-08: Delivered XicToXiPiPi Decay Length Analysis Extension in AliceO2Group/O2Physics, adding a new DecayLengthMcGen column to store the decay length of generated particles for non-prompt charm hadrons originating from b quarks. This enriches the XicToXiPiPi analysis with richer decay information, enabling improved signal/background discrimination and more precise physics measurements. Implemented as part of commit cf8b32d953b1962abf45b8a68610768885d3539f ("[PWGHF] XicToXiPiPi: Add DecayLengthMcGen column"), linked to PR #12627.
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics: Implemented a stability improvement in the ML probability vector handling within the task workflow. Added a size check to prevent out-of-bounds access and ensured outputFD is assigned only when the score vector contains exactly 3 elements. These changes reduce the risk of runtime crashes and incorrect outputs in production ML inference paths, improving reliability of physics data processing pipelines.
1 Commits
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics: Implemented a stability improvement in the ML probability vector handling within the task workflow. Added a size check to prevent out-of-bounds access and ensured outputFD is assigned only when the score vector contains exactly 3 elements. These changes reduce the risk of runtime crashes and incorrect outputs in production ML inference paths, improving reliability of physics data processing pipelines.
February 2025
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025 — Key contributions in AliceO2Group/O2Physics: delivered two features expanding data for PWGHF analyses and ML workflows, and implemented a critical typo fix to stabilize data reconstruction. These updates strengthen PWGHF particle reconstruction, ML-ready data quality, and data integrity across the analysis chain; showcased C++/ROOT proficiency and maintainable code practices.
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025 — Key contributions in AliceO2Group/O2Physics: delivered two features expanding data for PWGHF analyses and ML workflows, and implemented a critical typo fix to stabilize data reconstruction. These updates strengthen PWGHF particle reconstruction, ML-ready data quality, and data integrity across the analysis chain; showcased C++/ROOT proficiency and maintainable code practices.
Activity
Loading activity data...
Quality Metrics
Correctness84.0%
Maintainability84.0%
Architecture80.0%
Performance72.0%
AI Usage24.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
Bug FixingC++C++ DevelopmentData AnalysisData ProcessingMachine Learning Feature EngineeringParticle PhysicsSoftware DevelopmentWorkflow Managementdata analysismachine learningsoftware development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline