AliceO2Group/O2Physics
Nov 2024 – Jul 2026
15 Months active
Languages Used
C++
Technical Skills
C++C++ DevelopmentCMakeData AnalysisHigh Energy PhysicsParticle Physics
YubiaoWang
PROFILE
Yubiaowang
Over 15 months, contributed to the AliceO2Group/O2Physics repository by developing and refining advanced jet analysis workflows for high energy physics experiments. Built configurable C++ modules for jet v2 analysis, background subtraction, and event-plane studies, integrating Monte Carlo simulation and data processing with ROOT-based visualization. Enhanced analysis reliability by implementing robust memory management, modular histogramming, and parameterized event selection, while addressing edge-case bugs and improving code maintainability. Introduced flexible centrality estimators and background diagnostics, enabling reproducible, data/MC-consistent results. The work emphasized algorithm optimization, performance tuning, and collaborative version control, supporting precise, scalable physics analyses for the ALICE experiment.
Overall Statistics
Feature vs Bugs
84%Features
Repository Contributions
23Total
Bugs
3
Commits
23
Features
16
Lines of code
6,391
Activity Months15
Your Network
493 peopleSame Organization
@cern.ch348
Work History
July 2026
1 Commits
Jul 1, 2026July 2026 monthly summary for AliceO2Group/O2Physics focusing on reliability improvements in JetChargedV2 analysis. Delivered a robust background subtraction fix and modernized code hygiene, enhancing stability and maintainability of the physics workflow. The changes support more trustworthy results in jetChargedV2 analyses and reduce edge-case failures in non-positive integral scenarios.
1 Commits
Jul 1, 2026July 2026 monthly summary for AliceO2Group/O2Physics focusing on reliability improvements in JetChargedV2 analysis. Delivered a robust background subtraction fix and modernized code hygiene, enhancing stability and maintainability of the physics workflow. The changes support more trustworthy results in jetChargedV2 analyses and reduce edge-case failures in non-positive integral scenarios.
July 2026
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 focused on strengthening data quality and jet-background studies for O2Physics. Delivered two feature sets: (1) jet background subtraction diagnostics and monitoring enhancements with new histograms for local rho density, pT-dependent rho local distributions, and event-plane checks (FT0C/FT0M), including updates to local background estimation diagnostics and detector configuration refinement; (2) QA histograms for background-subtracted jet pT vs rho, adding two new 2D histograms and the corresponding fill logic. Fixed a centrality-vs-rho axis mapping bug to ensure centrality is mapped to the x-axis and rho to the y-axis. These changes improve the reliability of jet-background subtraction, enhance QA coverage, and provide more robust tools for physics performance evaluation.
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 focused on strengthening data quality and jet-background studies for O2Physics. Delivered two feature sets: (1) jet background subtraction diagnostics and monitoring enhancements with new histograms for local rho density, pT-dependent rho local distributions, and event-plane checks (FT0C/FT0M), including updates to local background estimation diagnostics and detector configuration refinement; (2) QA histograms for background-subtracted jet pT vs rho, adding two new 2D histograms and the corresponding fill logic. Fixed a centrality-vs-rho axis mapping bug to ensure centrality is mapped to the x-axis and rho to the y-axis. These changes improve the reliability of jet-background subtraction, enhance QA coverage, and provide more robust tools for physics performance evaluation.
April 2026
1 Commits • 1 Features
Apr 1, 2026Month 2026-04: Focused on jet analysis quality in O2Physics. Delivered Jet Analysis Enhancements with optimized jet selection for in-plane and out-of-plane jets and configurable parameters (track occupancy, jet radius). Fixed event selection and histogram filling issues to improve data accuracy. The work is tracked under commit 1198c2c6006d7b8556bacf3bdf76c885596da147 ([PWGJE] update the jet v2 in-plane and out-of-plane selection, fix several issue (#15887)).
1 Commits • 1 Features
Apr 1, 2026Month 2026-04: Focused on jet analysis quality in O2Physics. Delivered Jet Analysis Enhancements with optimized jet selection for in-plane and out-of-plane jets and configurable parameters (track occupancy, jet radius). Fixed event selection and histogram filling issues to improve data accuracy. The work is tracked under commit 1198c2c6006d7b8556bacf3bdf76c885596da147 ([PWGJE] update the jet v2 in-plane and out-of-plane selection, fix several issue (#15887)).
April 2026
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for AliceO2Group/O2Physics focusing on delivering a configurable and robust jet analysis framework with FT0A/FT0C selections and improved MC handling. The work enhances data/MC consistency, enables flexible analysis configurations, and fixes critical MC processing issues to improve reliability of jet analyses for high-energy physics experiments.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for AliceO2Group/O2Physics focusing on delivering a configurable and robust jet analysis framework with FT0A/FT0C selections and improved MC handling. The work enhances data/MC consistency, enables flexible analysis configurations, and fixes critical MC processing issues to improve reliability of jet analyses for high-energy physics experiments.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for AliceO2Group/O2Physics development work. Focused on integrating FT0C centrality estimator into jet background analysis, updating event cuts and background fluctuation calculations to incorporate centrality, thereby improving the accuracy of ALICE jet background analyses and reducing systematic uncertainties in centrality-dependent measurements.
1 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for AliceO2Group/O2Physics development work. Focused on integrating FT0C centrality estimator into jet background analysis, updating event cuts and background fluctuation calculations to incorporate centrality, thereby improving the accuracy of ALICE jet background analyses and reducing systematic uncertainties in centrality-dependent measurements.
December 2025
October 2025
1 Commits • 1 Features
Oct 1, 20252025-10 Monthly Summary for AliceO2Group/O2Physics: Focused on delivering flexible jet background subtraction enhancements and improved validation tooling to enable more detailed, reproducible jet analyses. Implemented configurable median/local rho options and expanded RM-related checks to support robust cross-checks.
October 2025
1 Commits • 1 Features
Oct 1, 20252025-10 Monthly Summary for AliceO2Group/O2Physics: Focused on delivering flexible jet background subtraction enhancements and improved validation tooling to enable more detailed, reproducible jet analyses. Implemented configurable median/local rho options and expanded RM-related checks to support robust cross-checks.
August 2025
1 Commits • 1 Features
Aug 1, 20252025-08 Monthly Summary for AliceO2Group/O2Physics: Implemented Jet-jet MC process integration for ChargedJetV2 with plotting enhancements and new histograms, enabling more accurate MC studies of jet properties and background subtraction. Refactored plotting utilities for consistency and reusability, improving analyst productivity and visualization quality. Added targeted histograms to support MC visualization and jet property analyses, boosting data/MC comparison capabilities. Fixed critical issues in processSigmaPtMCP plotting and improved the createAdd file upload workflow (#12681), enhancing reliability and collaboration.
1 Commits • 1 Features
Aug 1, 20252025-08 Monthly Summary for AliceO2Group/O2Physics: Implemented Jet-jet MC process integration for ChargedJetV2 with plotting enhancements and new histograms, enabling more accurate MC studies of jet properties and background subtraction. Refactored plotting utilities for consistency and reusability, improving analyst productivity and visualization quality. Added targeted histograms to support MC visualization and jet property analyses, boosting data/MC comparison capabilities. Fixed critical issues in processSigmaPtMCP plotting and improved the createAdd file upload workflow (#12681), enhancing reliability and collaboration.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Implemented MC jet analysis with subtraction methods for matched MCP/MCD jets, including in-plane and out-of-plane comparisons, enabling assessment of particle-level versus detector-level jet responses. The work supports PWGJE goals and was delivered in the AliceO2Group/O2Physics repository with a dedicated commit addressing subtraction in both in-plane/out-of-plane scenarios.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Implemented MC jet analysis with subtraction methods for matched MCP/MCD jets, including in-plane and out-of-plane comparisons, enabling assessment of particle-level versus detector-level jet responses. The work supports PWGJE goals and was delivered in the AliceO2Group/O2Physics repository with a dedicated commit addressing subtraction in both in-plane/out-of-plane scenarios.
June 2025
2 Commits • 2 Features
Jun 1, 2025June 2025 — AliceO2Group/O2Physics: Delivered jet v2 analysis enhancement across MCD and MCP data, and memory usage optimizations for plots and fit checks, improving analysis coverage and performance for large-scale simulations. These changes enable consistent cross-level (Data/MC) jet analysis, reduce runtime memory footprint, and introduce configurable quality checks to safeguard analysis fidelity.
2 Commits • 2 Features
Jun 1, 2025June 2025 — AliceO2Group/O2Physics: Delivered jet v2 analysis enhancement across MCD and MCP data, and memory usage optimizations for plots and fit checks, improving analysis coverage and performance for large-scale simulations. These changes enable consistent cross-level (Data/MC) jet analysis, reduce runtime memory footprint, and introduce configurable quality checks to safeguard analysis fidelity.
June 2025
May 2025
1 Commits
May 1, 2025May 2025 deliverable focused on reliability and accuracy of random-cone background estimation for jetChargedV2 in O2Physics. Implemented a robust fix for leading-jet handling in random-cone calculations by introducing a configurable parameter randomConeLeadJetDeltaR to enforce minimum separation between the leading jet and random-cone axes. This prevents improper inclusion/exclusion of the leading jet, improving the fidelity of background estimations and reducing systematic bias in charged-jet analyses. The change is implemented in the O2Physics repository (AliceO2Group/O2Physics) and committed as 7ab16c31d150715245475002fde5667feb916343 (#11025). This work demonstrates strong C++ design, parameterization, and maintainability, with targeted testing and code-review discipline.
May 2025
1 Commits
May 1, 2025May 2025 deliverable focused on reliability and accuracy of random-cone background estimation for jetChargedV2 in O2Physics. Implemented a robust fix for leading-jet handling in random-cone calculations by introducing a configurable parameter randomConeLeadJetDeltaR to enforce minimum separation between the leading jet and random-cone axes. This prevents improper inclusion/exclusion of the leading jet, improving the fidelity of background estimations and reducing systematic bias in charged-jet analyses. The change is implemented in the O2Physics repository (AliceO2Group/O2Physics) and committed as 7ab16c31d150715245475002fde5667feb916343 (#11025). This work demonstrates strong C++ design, parameterization, and maintainability, with targeted testing and code-review discipline.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 performance summary for AliceO2Group/O2Physics: Implemented track efficiency analysis instrumentation and improved random-cone background handling to enhance physics accuracy and analysis reliability. Added centrality-correlated histograms for track properties (pT, eta, phi, energy); refined random-cone selection by removing the leading jet’s eta-phi band; adjusted local rho fitting parameters. Code cleanup removed unused test plots and configurations to reduce noise and maintenance effort. Business value: more precise tracking efficiency measurements, robust background subtraction for jet analyses, and a leaner, more maintainable codebase.
1 Commits • 1 Features
Apr 1, 2025April 2025 performance summary for AliceO2Group/O2Physics: Implemented track efficiency analysis instrumentation and improved random-cone background handling to enhance physics accuracy and analysis reliability. Added centrality-correlated histograms for track properties (pT, eta, phi, energy); refined random-cone selection by removing the leading jet’s eta-phi band; adjusted local rho fitting parameters. Code cleanup removed unused test plots and configurations to reduce noise and maintenance effort. Business value: more precise tracking efficiency measurements, robust background subtraction for jet analyses, and a leaner, more maintainable codebase.
April 2025
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for AliceO2Group/O2Physics focused on enhancing event-plane analytics and improving data quality for PWGJE analyses. Delivered new visualization plots and metrics, implemented robust checks, and fixed critical distribution parameters to reduce analysis uncertainties.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for AliceO2Group/O2Physics focused on enhancing event-plane analytics and improving data quality for PWGJE analyses. Delivered new visualization plots and metrics, implemented robust checks, and fixed critical distribution parameters to reduce analysis uncertainties.
February 2025
2 Commits • 2 Features
Feb 1, 2025February 2025: Focused on robust charged jet analysis in O2Physics (AliceO2Group/O2Physics). Delivered two targeted features to improve event selection, fitting, and jet constituent analysis; implemented memory-safe data handling and added diagnostic histograms to aid validation. Business value centers on more precise jet measurements, reduced analysis ambiguity, and smoother workflow validation for physics results.
2 Commits • 2 Features
Feb 1, 2025February 2025: Focused on robust charged jet analysis in O2Physics (AliceO2Group/O2Physics). Delivered two targeted features to improve event selection, fitting, and jet constituent analysis; implemented memory-safe data handling and added diagnostic histograms to aid validation. Business value centers on more precise jet measurements, reduced analysis ambiguity, and smoother workflow validation for physics results.
February 2025
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Delivered the Charged Jet V2 Analysis Task for PWGJE in the AliceO2Group/O2Physics repository. The work included a code refactor and new configurable parameters for track occupancy and event plane analysis, along with expanded QA histogramming for jet properties, background fluctuations, and event plane correlations to enhance measurement precision and physics reach. Implemented quiet mode fitting to reduce log noise (V+ -> Q), improving stability and readability of production logs. This feature delivery is supported by two commits, marking an important step toward scalable PWGJE analyses in the O2 physics stack.
January 2025
2 Commits • 1 Features
Jan 1, 2025January 2025 — Delivered the Charged Jet V2 Analysis Task for PWGJE in the AliceO2Group/O2Physics repository. The work included a code refactor and new configurable parameters for track occupancy and event plane analysis, along with expanded QA histogramming for jet properties, background fluctuations, and event plane correlations to enhance measurement precision and physics reach. Implemented quiet mode fitting to reduce log noise (V+ -> Q), improving stability and readability of production logs. This feature delivery is supported by two commits, marking an important step toward scalable PWGJE analyses in the O2 physics stack.
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for AliceO2Group/O2Physics focused on delivering Jet Charged V2 Analysis capabilities and stabilizing data integrity for jet v2 workflows. Achieved initial implementation of the Jet Charged V2 Analysis task and fixed a critical in-plane vs out-of-plane data filling bug to ensure accurate data collection for jet v2 analyses. This work enhances analysis reliability and accelerates downstream physics results through higher-quality data pipelines and traceable commits.
2 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for AliceO2Group/O2Physics focused on delivering Jet Charged V2 Analysis capabilities and stabilizing data integrity for jet v2 workflows. Achieved initial implementation of the Jet Charged V2 Analysis task and fixed a critical in-plane vs out-of-plane data filling bug to ensure accurate data collection for jet v2 analyses. This work enhances analysis reliability and accelerates downstream physics results through higher-quality data pipelines and traceable commits.
November 2024
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Quality Metrics
Correctness83.4%
Maintainability81.8%
Architecture79.6%
Performance75.2%
AI Usage30.4%
Skills & Technologies
Programming Languages
C++
Technical Skills
ALICE Experiment AnalysisC++C++ DevelopmentC++ programmingCMakeData AnalysisData ProcessingData VisualizationEvent ReconstructionHigh Energy PhysicsHigh Energy Physics AnalysisHigh Energy Physics SoftwareJet PhysicsJet ReconstructionMemory Management
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