IMSA-CMS/CMSAnalysis
Jun 2025 – Nov 2025
6 Months active
Languages Used
C++ShellXMLtext
Technical Skills
C++C++ DevelopmentData AnalysisParticle PhysicsSoftware DevelopmentSoftware Engineering
Izen Wong
PROFILE
Izen Wong
Over six months, Ian Wong enhanced the IMSA-CMS/CMSAnalysis repository by developing and refining data analysis and visualization workflows for high-energy physics research. He integrated new particle selectors and expanded cross-year data handling, improving event filtering and analysis fidelity. Using C++ and ROOT, Ian modernized plotting APIs, reorganized configuration management, and introduced new lepton jet variable types to support advanced mass and Delta-R analyses. His work included code refactoring for maintainability, robust histogram scaling, and removal of dead code, resulting in cleaner, more scalable pipelines. These contributions enabled more accurate, maintainable, and efficient scientific computing for particle physics experiments.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
17Total
Bugs
1
Commits
17
Features
7
Lines of code
413,891
Activity Months6
Your Network
34 people
Work History
November 2025
2 Commits • 1 Features
Nov 1, 2025In November 2025, IMSA-CMS/CMSAnalysis delivered significant enhancements to the Analysis Framework, improving data handling and analysis accuracy for high-energy physics experiments. Key improvements include refined histogram scaling, removal of unnecessary debug output, and the introduction of new lepton jet variable types to enable more precise mass and Delta-R analyses. These changes streamline data processing, improve visualization, and lay groundwork for more robust physics results.
2 Commits • 1 Features
Nov 1, 2025In November 2025, IMSA-CMS/CMSAnalysis delivered significant enhancements to the Analysis Framework, improving data handling and analysis accuracy for high-energy physics experiments. Key improvements include refined histogram scaling, removal of unnecessary debug output, and the introduction of new lepton jet variable types to enable more precise mass and Delta-R analyses. These changes streamline data processing, improve visualization, and lay groundwork for more robust physics results.
November 2025
October 2025
2 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on improving visualization reliability and consistency in IMSA-CMS/CMSAnalysis by refactoring the plotting binning configuration. Replaced setNumBins with setRebinFactor and updated the PlotFormatter API to enhance histogram scaling, naming clarity, and visual accuracy. API modernization was accompanied by careful commits to phase out the outdated argument, with minimal disruption to downstream dashboards. No major bugs fixed in this period for this repository. Impact: cleaner, more scalable plotting configuration across dashboards; easier maintenance and clearer intent in visualization code. Skills demonstrated: API design, refactoring, version-control discipline, data visualization practices.
October 2025
2 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on improving visualization reliability and consistency in IMSA-CMS/CMSAnalysis by refactoring the plotting binning configuration. Replaced setNumBins with setRebinFactor and updated the PlotFormatter API to enhance histogram scaling, naming clarity, and visual accuracy. API modernization was accompanied by careful commits to phase out the outdated argument, with minimal disruption to downstream dashboards. No major bugs fixed in this period for this repository. Impact: cleaner, more scalable plotting configuration across dashboards; easier maintenance and clearer intent in visualization code. Skills demonstrated: API design, refactoring, version-control discipline, data visualization practices.
September 2025
7 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for IMSA-CMS/CMSAnalysis focusing on delivering cross-year Higgs/HH data integration, hardening the plotting stack, and removing dead code to enable more reliable, cross-year analyses with improved systematics handling.
7 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for IMSA-CMS/CMSAnalysis focusing on delivering cross-year Higgs/HH data integration, hardening the plotting stack, and removing dead code to enable more reliable, cross-year analyses with improved systematics handling.
September 2025
August 2025
2 Commits • 1 Features
Aug 1, 2025In August 2025, delivered a readability-focused refactor in IMSA-CMS/CMSAnalysis: HistVariable constructor initialization list was reordered to move the 'unit' member to the end. This was a non-functional change aimed at improving maintainability and future extensibility. Two commits during the refactor (925eaf9e7069bd181965639f833a7b47a68b16ab; 9826aadee8e5306af86b7c4e8a22f5cfa82aa357) address minor issues and preserve existing behavior. Overall impact: easier code maintenance, lower risk for future changes, and enhanced clarity for contributors. Technologies: C++ constructor initialization lists, refactoring practices, and version-controlled development.
August 2025
2 Commits • 1 Features
Aug 1, 2025In August 2025, delivered a readability-focused refactor in IMSA-CMS/CMSAnalysis: HistVariable constructor initialization list was reordered to move the 'unit' member to the end. This was a non-functional change aimed at improving maintainability and future extensibility. Two commits during the refactor (925eaf9e7069bd181965639f833a7b47a68b16ab; 9826aadee8e5306af86b7c4e8a22f5cfa82aa357) address minor issues and preserve existing behavior. Overall impact: easier code maintenance, lower risk for future changes, and enhanced clarity for contributors. Technologies: C++ constructor initialization lists, refactoring practices, and version-controlled development.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025: Delivered the CMSAnalysis Analytics Overhaul for IMSA-CMS/CMSAnalysis, consolidating data processing and plotting improvements, reorganizing analysis scripts, and establishing flexible configuration workflows. This work enables faster analytics iterations, more reliable visualizations, and easier maintenance, contributing to scalable data analysis capabilities.
2 Commits • 1 Features
Jul 1, 2025July 2025: Delivered the CMSAnalysis Analytics Overhaul for IMSA-CMS/CMSAnalysis, consolidating data processing and plotting improvements, reorganizing analysis scripts, and establishing flexible configuration workflows. This work enables faster analytics iterations, more reliable visualizations, and easier maintenance, contributing to scalable data analysis capabilities.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025: Delivered integration of new particle selectors (FakePhotonSelector and LostElectronSelector) into IMSA-CMS/CMSAnalysis workflow, updated muon Pt cut thresholds, and extended EventModule/LeptonJetReconstructionPlan to incorporate the new selectors, improving histogram generation and event filtering. This work enhances particle identification accuracy, strengthens analysis fidelity, and accelerates downstream physics measurements by providing cleaner event samples and better control of selection biases.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025: Delivered integration of new particle selectors (FakePhotonSelector and LostElectronSelector) into IMSA-CMS/CMSAnalysis workflow, updated muon Pt cut thresholds, and extended EventModule/LeptonJetReconstructionPlan to incorporate the new selectors, improving histogram generation and event filtering. This work enhances particle identification accuracy, strengthens analysis fidelity, and accelerates downstream physics measurements by providing cleaner event samples and better control of selection biases.
Activity
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Quality Metrics
Correctness81.2%
Maintainability78.8%
Architecture71.8%
Performance69.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++ShellXMLtext
Technical Skills
Algorithm DevelopmentAnalysis SetupC++C++ DevelopmentC++ programmingCode CleanupConfigurationConfiguration ManagementData AnalysisData ManagementData VisualizationDebuggingHigh Energy PhysicsMachine LearningMachine Learning (TMVA)
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