IMSA-CMS/CMSAnalysis
Jan 2025 – Jun 2026
6 Months active
Languages Used
C++
Technical Skills
C++ DevelopmentData AnalysisBuild System OptimizationCode RefactoringC++Software Development
Peter Dong
PROFILE
Peter Dong
Over six months, contributed to IMSA-CMS/CMSAnalysis by delivering targeted enhancements and bug fixes focused on data analysis workflows and code maintainability. Work included optimizing histogram retrieval logic for more robust analytics, refining event selection in lepton-jet reconstruction, and tuning particle selection efficiency through deltaR threshold adjustments. Applied C++ and the ROOT framework to streamline background estimation and histogram manipulation, while also improving build system performance by removing redundant includes and reducing log noise. Each change was validated through disciplined version control and documentation, supporting reproducible, maintainable analysis pipelines and aligning technical solutions with the evolving needs of CMS data processing.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
12Total
Bugs
2
Commits
12
Features
4
Lines of code
583,564
Activity Months6
Your Network
37 peopleSame Organization
@imsa.edu14
Shared Repositories
23
Aarya BajaJMember
Anwita KasturiMember
Anwita KasturiMember
Jayram PalamadaiMember
Blake HenningsMember
Brooke HobbsMember
fCameron EddingtonMember
Daniel LimosneroMember
Hannah ChenMember
Work History
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for IMSA-CMS/CMSAnalysis: Focused optimization of particle selection efficiency by tuning the tau DeltaR threshold, yielding improved duplicate-particle identification with a minimal code change. This aligns with business goals to enhance data quality and processing throughput in the CMSAnalysis pipeline.
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for IMSA-CMS/CMSAnalysis: Focused optimization of particle selection efficiency by tuning the tau DeltaR threshold, yielding improved duplicate-particle identification with a minimal code change. This aligns with business goals to enhance data quality and processing throughput in the CMSAnalysis pipeline.
June 2026
April 2026
1 Commits • 1 Features
Apr 1, 2026In April 2026, IMSA-CMS/CMSAnalysis delivered a focused enhancement to the CMS Analysis Toolkit, introducing new data analysis and background estimation scripts to streamline CMS data workflows. The feature, CMS Analysis Tools Enhancements, improves data processing accuracy and speed, supporting more reliable CMS analyses and faster decision-making. A single merged PR (commit fb5f0498da253b11c49449993d5de306709500ae) captured these changes with minor edits, reflecting efficient review and integration into the main branch. No major bugs were reported this month; efforts centered on delivering business value and maintaining system stability. This work aligns with our goals of reproducibility, maintainability, and scalable analysis capabilities. Technologies and skills demonstrated include Python-based data analysis scripting, CMS toolkit integration, and disciplined GitHub PR workflows.
April 2026
1 Commits • 1 Features
Apr 1, 2026In April 2026, IMSA-CMS/CMSAnalysis delivered a focused enhancement to the CMS Analysis Toolkit, introducing new data analysis and background estimation scripts to streamline CMS data workflows. The feature, CMS Analysis Tools Enhancements, improves data processing accuracy and speed, supporting more reliable CMS analyses and faster decision-making. A single merged PR (commit fb5f0498da253b11c49449993d5de306709500ae) captured these changes with minor edits, reflecting efficient review and integration into the main branch. No major bugs were reported this month; efforts centered on delivering business value and maintaining system stability. This work aligns with our goals of reproducibility, maintainability, and scalable analysis capabilities. Technologies and skills demonstrated include Python-based data analysis scripting, CMS toolkit integration, and disciplined GitHub PR workflows.
January 2026
2 Commits • 1 Features
Jan 1, 2026In January 2026, delivered targeted log cleanup in IMSA-CMS/CMSAnalysis to reduce console noise in histogram-related code paths. This involved commenting out non-essential log statements during histogram creation and when histograms are added, improving log readability and maintainability without altering functionality. No major bugs were fixed this month. Key commits: 6d3eedd2332120ff09d94cd305fd1057108e5fc9; fecd76f4175f4779633ea113e20facd46c8a88a4.
2 Commits • 1 Features
Jan 1, 2026In January 2026, delivered targeted log cleanup in IMSA-CMS/CMSAnalysis to reduce console noise in histogram-related code paths. This involved commenting out non-essential log statements during histogram creation and when histograms are added, improving log readability and maintainability without altering functionality. No major bugs were fixed this month. Key commits: 6d3eedd2332120ff09d94cd305fd1057108e5fc9; fecd76f4175f4779633ea113e20facd46c8a88a4.
January 2026
August 2025
2 Commits
Aug 1, 2025August 2025 focused on correcting a critical event-selection bug in the Lepton Jet Reconstruction workflow within IMSA-CMS/CMSAnalysis. The fix ensures the reconstruction plan uses LeptonJetSelector instead of FakePhotonSelector, aligning event selection with physics intent and improving the accuracy of lepton-jet analyses. This work was accompanied by targeted commits and validation to prevent regression.
August 2025
2 Commits
Aug 1, 2025August 2025 focused on correcting a critical event-selection bug in the Lepton Jet Reconstruction workflow within IMSA-CMS/CMSAnalysis. The fix ensures the reconstruction plan uses LeptonJetSelector instead of FakePhotonSelector, aligning event selection with physics intent and improving the accuracy of lepton-jet analyses. This work was accompanied by targeted commits and validation to prevent regression.
June 2025
4 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for IMSA-CMS/CMSAnalysis: Key feature delivered: Code cleanup to remove unused and redundant include directives in CMSAnalysis and Plans directories. No functional changes. Major bugs fixed: none this month. Overall impact: Reduced header bloat, potential include-related conflicts, and improved compile times; strengthens code hygiene and maintainability, setting a solid baseline for future refactors and feature work. Technologies/skills demonstrated: C++, build optimization, include hygiene, code refactoring discipline, and effective use of Git for traceable changes.
4 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for IMSA-CMS/CMSAnalysis: Key feature delivered: Code cleanup to remove unused and redundant include directives in CMSAnalysis and Plans directories. No functional changes. Major bugs fixed: none this month. Overall impact: Reduced header bloat, potential include-related conflicts, and improved compile times; strengthens code hygiene and maintainability, setting a solid baseline for future refactors and feature work. Technologies/skills demonstrated: C++, build optimization, include hygiene, code refactoring discipline, and effective use of Git for traceable changes.
June 2025
January 2025
2 Commits
Jan 1, 2025January 2025 monthly summary for IMSA-CMS/CMSAnalysis: Delivered a fix to PlotFormatter histogram retrieval by direct access, simplifying the retrieval path and improving correctness of histogram data used in analyses. Eliminated the need to locate a process and then its systematic histogram, reducing misreferences and edge-case failures in the analysis module. This work improves reliability for downstream analytics and maintains alignment with existing workflows. Key commits implementing the changes are 8ade5bbfb88ce5f8f8776dee5693ab11539de80e and 1d20529f144be9896885f867bc37958f69a27eb5.
January 2025
2 Commits
Jan 1, 2025January 2025 monthly summary for IMSA-CMS/CMSAnalysis: Delivered a fix to PlotFormatter histogram retrieval by direct access, simplifying the retrieval path and improving correctness of histogram data used in analyses. Eliminated the need to locate a process and then its systematic histogram, reducing misreferences and edge-case failures in the analysis module. This work improves reliability for downstream analytics and maintains alignment with existing workflows. Key commits implementing the changes are 8ade5bbfb88ce5f8f8776dee5693ab11539de80e and 1d20529f144be9896885f867bc37958f69a27eb5.
Activity
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Quality Metrics
Correctness91.6%
Maintainability91.6%
Architecture85.0%
Performance76.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
Build System OptimizationC++C++ DevelopmentC++ developmentC++ programmingCode RefactoringData AnalysisROOT frameworkSoftware Developmentalgorithm optimizationbackground estimationdata analysishistogram manipulationsoftware debuggingsoftware engineering
Repositories Contributed To
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