AliceO2Group/O2Physics
Feb 2025 – Oct 2025
4 Months active
Languages Used
C++
Technical Skills
C++Data AnalysisPhysics AnalysisC++ DevelopmentPhysics SimulationMonte Carlo Methods
Yuanjing Ji
PROFILE
Yuanjing Ji
Over four months, Jiyj contributed to the AliceO2Group/O2Physics repository by developing four targeted features that advanced data analysis and simulation workflows. Jiyj enhanced proton identification and event selection for PWGDQ analyses, implemented a new kinematic variable for dilepton–hadron correlations, and expanded the mixing framework with granular multiplicity configurations. Additionally, Jiyj extended Monte Carlo signal coverage by defining Lambda0 and Sigma+ baryons in the simulation library. All work was delivered in C++ and integrated with existing pipelines, demonstrating strong skills in C++ development, data analysis, and physics simulation. The contributions were robust, well-aligned with project standards, and maintainable.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
4Total
Bugs
0
Commits
4
Features
4
Lines of code
64
Activity Months4
Your Network
169 peopleSame Organization
@mail.ustc.edu.cn35
Shared Repositories
134
Work History
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025: Feature delivery in O2Physics focused on expanding Monte Carlo signal coverage. Key achievement: added Monte Carlo definitions for Lambda0 Baryon and Sigma+ Baryon to the MCSignalLibrary, enabling recognition and processing of these signals in the simulation framework. The change includes prong count, particle IDs, and related properties, implemented via commit 4246fbfa143c00342f848157758bf7056a8b6e64 (PR [PWGDQ] Add MC definition of Lambda0 and Sigma+ Baryon (#13145)). No major bugs fixed this month. Impact: improves simulation fidelity for baryon signals, enhances downstream analysis capabilities, and strengthens the MC pipeline. Technologies/skills: Monte Carlo signal modeling, MCSignalLibrary, O2Physics integration, PR-based collaboration, code review.
1 Commits • 1 Features
Oct 1, 2025October 2025: Feature delivery in O2Physics focused on expanding Monte Carlo signal coverage. Key achievement: added Monte Carlo definitions for Lambda0 Baryon and Sigma+ Baryon to the MCSignalLibrary, enabling recognition and processing of these signals in the simulation framework. The change includes prong count, particle IDs, and related properties, implemented via commit 4246fbfa143c00342f848157758bf7056a8b6e64 (PR [PWGDQ] Add MC definition of Lambda0 and Sigma+ Baryon (#13145)). No major bugs fixed this month. Impact: improves simulation fidelity for baryon signals, enhances downstream analysis capabilities, and strengthens the MC pipeline. Technologies/skills: Monte Carlo signal modeling, MCSignalLibrary, O2Physics integration, PR-based collaboration, code review.
October 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered a focused enhancement to the O2Physics mixing framework by adding three multiplicity configurations (Mult1/Mult2/Mult3) to the mixing handler, enabling more granular analysis of particle production across multiplicity ranges. The change was implemented and integrated under PWGDQ task #12773 (commit 0291c811eb4295f4a87c73e4da85c19947885e5a). No major bugs fixed this month; stability improved through alignment with existing CI and validation workflows. Overall, this work increases configurability and traceability in multiplicity analyses, accelerating physics results and supporting more nuanced studies across multiplicity regimes. Technologies demonstrated include C++ development within O2Physics, Git-based version control, and adherence to project conventions.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered a focused enhancement to the O2Physics mixing framework by adding three multiplicity configurations (Mult1/Mult2/Mult3) to the mixing handler, enabling more granular analysis of particle production across multiplicity ranges. The change was implemented and integrated under PWGDQ task #12773 (commit 0291c811eb4295f4a87c73e4da85c19947885e5a). No major bugs fixed this month; stability improved through alignment with existing CI and validation workflows. Overall, this work increases configurability and traceability in multiplicity analyses, accelerating physics results and supporting more nuanced studies across multiplicity regimes. Technologies demonstrated include C++ development within O2Physics, Git-based version control, and adherence to project conventions.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 (2025-05) monthly summary for AliceO2Group/O2Physics focusing on key accomplishments, business value, and technical progress.
1 Commits • 1 Features
May 1, 2025May 2025 (2025-05) monthly summary for AliceO2Group/O2Physics focusing on key accomplishments, business value, and technical progress.
May 2025
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics focusing on key accomplishments, major fixes, impact, and skills demonstrated. The main deliverable this month is the Proton analysis enhancements enabling improved proton identification and event selection for PWGDQ analyses. The changes strengthen physics reach for proton studies and provide a cleaner event sample for PWGDQ workloads.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for AliceO2Group/O2Physics focusing on key accomplishments, major fixes, impact, and skills demonstrated. The main deliverable this month is the Proton analysis enhancements enabling improved proton identification and event selection for PWGDQ analyses. The changes strengthen physics reach for proton studies and provide a cleaner event sample for PWGDQ workloads.
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Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ DevelopmentData AnalysisMonte Carlo MethodsPhysics AnalysisPhysics Simulation
Repositories Contributed To
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