sPHENIX-Collaboration/analysis
Jan 2025 – Mar 2026
9 Months active
Languages Used
C++ShellMarkdownROOTBash
Technical Skills
Build SystemsC++C++ DevelopmentData AnalysisDebuggingEvent Processing
Joseph Clement
PROFILE
Joseph Clement
Over nine months, Joseph Clark developed and maintained advanced data analysis modules for the sPHENIX-Collaboration/analysis repository, focusing on high-energy physics workflows. He engineered robust C++ and shell-scripted pipelines for jet background rejection, luminosity calculation, and trigger counting, integrating configuration-driven modules and systematic error handling. His work included enhancements for batch processing, build system configuration, and data provenance, with careful attention to reproducibility and maintainability. By consolidating rate calculations, improving error handling, and introducing visualization for crossing-angle analyses, Joseph delivered reliable, flexible tools that improved analysis accuracy and reduced manual intervention, demonstrating depth in scientific computing and software engineering practices.
Overall Statistics
Feature vs Bugs
84%Features
Repository Contributions
56Total
Bugs
3
Commits
56
Features
16
Lines of code
16,222,945
Activity Months9
Your Network
109 peopleSame Organization
@colorado.edu61
Shared Repositories
48
ahodges21Member
Antonio SilvaMember
aopattonMember
bkimelmanMember
cdean-githubMember
Mickey ChiuMember
Cheng-Wei ShihMember
Derek M AndersonMember
Daniel J LisMember
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly highlights for the sPHENIX collaboration analytics work.
1 Commits • 1 Features
Mar 1, 2026March 2026 monthly highlights for the sPHENIX collaboration analytics work.
March 2026
February 2026
3 Commits • 2 Features
Feb 1, 2026Concise monthly summary for 2026-02 focused on sPHENIX-Collaboration/analysis. The month delivered substantive improvements to data processing and rate analytics, with an emphasis on business value through more accurate luminosity analyses and robust rate calculations, along with code hygiene that reduces future maintenance cost. Key features delivered: - Luminosity Data Processing Enhancements: Updated luminosity numbers and refined processing pipeline, improving the accuracy of luminosity-driven analyses. Commits: a553897c7c155af441b3a776c651ddbb4fe9c5d6. - Rate Calculation Enhancements and Code Cleanup: Introduced true-rate-based probability calculations, refined rate calculation logic for higher accuracy, added detailed logging for rate differences, updated handling of true rates in rate map generation, and cleaned up outdated comments and unused segments. Commits: 65391139fb96531335a3666a01bde072e2bb32cb; de2a2587abe868f1b1393d50c058244bda0b6174. Major bugs fixed: - Corrected rate calculation scheme to align with true-rate based probabilities, improving result reliability. - Removed noise from legacy code by cleaning up outdated comments and unused segments; adjusted rate map generation to reflect true rates. Overall impact and accomplishments: - Improved analysis accuracy and trust in luminosity-driven results, enabling more reliable physics conclusions. - Enhanced observability with detailed rate-difference logging, accelerating debugging and issue resolution. - Reduced technical debt through targeted code cleanup, setting the stage for faster future iterations. Technologies/skills demonstrated: - Advanced data processing workflows, probability-based rate calculations, detailed logging instrumentation, and code hygiene practices. Business value: - Higher quality analytics, reduced risk from incorrect rate handling, and faster troubleshooting translate to more credible results and shorter turnaround for analysis cycles.
February 2026
3 Commits • 2 Features
Feb 1, 2026Concise monthly summary for 2026-02 focused on sPHENIX-Collaboration/analysis. The month delivered substantive improvements to data processing and rate analytics, with an emphasis on business value through more accurate luminosity analyses and robust rate calculations, along with code hygiene that reduces future maintenance cost. Key features delivered: - Luminosity Data Processing Enhancements: Updated luminosity numbers and refined processing pipeline, improving the accuracy of luminosity-driven analyses. Commits: a553897c7c155af441b3a776c651ddbb4fe9c5d6. - Rate Calculation Enhancements and Code Cleanup: Introduced true-rate-based probability calculations, refined rate calculation logic for higher accuracy, added detailed logging for rate differences, updated handling of true rates in rate map generation, and cleaned up outdated comments and unused segments. Commits: 65391139fb96531335a3666a01bde072e2bb32cb; de2a2587abe868f1b1393d50c058244bda0b6174. Major bugs fixed: - Corrected rate calculation scheme to align with true-rate based probabilities, improving result reliability. - Removed noise from legacy code by cleaning up outdated comments and unused segments; adjusted rate map generation to reflect true rates. Overall impact and accomplishments: - Improved analysis accuracy and trust in luminosity-driven results, enabling more reliable physics conclusions. - Enhanced observability with detailed rate-difference logging, accelerating debugging and issue resolution. - Reduced technical debt through targeted code cleanup, setting the stage for faster future iterations. Technologies/skills demonstrated: - Advanced data processing workflows, probability-based rate calculations, detailed logging instrumentation, and code hygiene practices. Business value: - Higher quality analytics, reduced risk from incorrect rate handling, and faster troubleshooting translate to more credible results and shorter turnaround for analysis cycles.
January 2026
8 Commits • 1 Features
Jan 1, 2026January 2026 performance snapshot for sPHENIX-Collaboration/analysis: delivered focused luminosity analysis enhancements to improve accuracy and reliability of luminosity-driven physics measurements. Consolidated rate calculation, mapping, and data structures for luminosity data, with integration of Run 52444 data to broaden coverage and improve precision. Implemented targeted fixes to lumi rate usage and calculations, and enhanced rate-finding by incorporating simulated probabilities. Added three lumi lists to support multiple analysis configurations and cross-validation. These contributions strengthen cross-section normalization, reduce luminosity-related systematic uncertainties, and streamline downstream analysis pipelines.
8 Commits • 1 Features
Jan 1, 2026January 2026 performance snapshot for sPHENIX-Collaboration/analysis: delivered focused luminosity analysis enhancements to improve accuracy and reliability of luminosity-driven physics measurements. Consolidated rate calculation, mapping, and data structures for luminosity data, with integration of Run 52444 data to broaden coverage and improve precision. Implemented targeted fixes to lumi rate usage and calculations, and enhanced rate-finding by incorporating simulated probabilities. Added three lumi lists to support multiple analysis configurations and cross-validation. These contributions strengthen cross-section normalization, reduce luminosity-related systematic uncertainties, and streamline downstream analysis pipelines.
January 2026
September 2025
6 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for sPHENIX-Collaboration/analysis: Delivered key luminosity data handling improvements, batch job submission automation, and documentation cleanup. These efforts enhanced data accuracy, processing throughput, and maintainability for luminosity calculations and batch workflows.
September 2025
6 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for sPHENIX-Collaboration/analysis: Delivered key luminosity data handling improvements, batch job submission automation, and documentation cleanup. These efforts enhanced data accuracy, processing throughput, and maintainability for luminosity calculations and batch workflows.
August 2025
2 Commits • 1 Features
Aug 1, 2025In August 2025, delivered Corrected Live Time (CLT) support for Trigger Counting and Luminosity Calculations in the sPHENIX-Collaboration/analysis repository. Key improvements include live-time checking in trigger counting, an optional 'clt' parameter for luminosity calculations, and CLT-aware file naming that appends _clt when CLT is enabled. These changes enhance measurement accuracy and flexibility for event processing. The work is tracked in commits 3b4c31e2d16069493fcf2750c1da00a3194624ef and b18f0c5c4b46e0c55dc16146d7c48634036d61eb.
2 Commits • 1 Features
Aug 1, 2025In August 2025, delivered Corrected Live Time (CLT) support for Trigger Counting and Luminosity Calculations in the sPHENIX-Collaboration/analysis repository. Key improvements include live-time checking in trigger counting, an optional 'clt' parameter for luminosity calculations, and CLT-aware file naming that appends _clt when CLT is enabled. These changes enhance measurement accuracy and flexibility for event processing. The work is tracked in commits 3b4c31e2d16069493fcf2750c1da00a3194624ef and b18f0c5c4b46e0c55dc16146d7c48634036d61eb.
August 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for sPHENIX-Collaboration/analysis: Focused on delivering robust luminosity processing and reliable data reporting. Key work included overhauling the luminosity calculation pipeline to consolidate data processing, tree flattening, z-vertex selection, and trigger/live-time handling, resulting in improved accuracy and processing efficiency. Addressed a ROOT file path prefix issue and corrected the segment output indexing to ensure correct data retrieval and accurate high/low raw segment reporting, enhancing analysis reliability. Across these efforts, delivered code changes with notable commits: 4b45485639ed4f3a9b72d15049fd50c3e8bffa1b (major updates), 0bd0bf8116a1e39ce997d6fa5d31eee89ebb4497 (tree flattening updates), adffddacaf19e98e6ae80d47772a83bd1d5556b2 (path/output fix). These changes collectively reduce data inconsistencies, speed up lumi processing, and strengthen data provenance.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for sPHENIX-Collaboration/analysis: Focused on delivering robust luminosity processing and reliable data reporting. Key work included overhauling the luminosity calculation pipeline to consolidate data processing, tree flattening, z-vertex selection, and trigger/live-time handling, resulting in improved accuracy and processing efficiency. Addressed a ROOT file path prefix issue and corrected the segment output indexing to ensure correct data retrieval and accurate high/low raw segment reporting, enhancing analysis reliability. Across these efforts, delivered code changes with notable commits: 4b45485639ed4f3a9b72d15049fd50c3e8bffa1b (major updates), 0bd0bf8116a1e39ce997d6fa5d31eee89ebb4497 (tree flattening updates), adffddacaf19e98e6ae80d47772a83bd1d5556b2 (path/output fix). These changes collectively reduce data inconsistencies, speed up lumi processing, and strengthen data provenance.
March 2025
7 Commits • 3 Features
Mar 1, 2025March 2025: Focused on robustness, configurability, and extended pileup/luminosity measurement capabilities in the analysis pipeline. Delivered four core enhancements and fixes that improve data quality, reliability, and deployment flexibility. Key outcomes include: Trigger count enhancements with BCO capture and nbunch counting, safeguards in luminosity calculations to prevent division by zero and invalid prescale usage, improved configuration flexibility for LuminosityCounterGoodRuns analysis script, and refined Treemaking scripts to improve execution context and input/output path handling. These changes reduce runtime errors, improve calculation reliability, and enhance reproducibility and deployment flexibility across workflows.
7 Commits • 3 Features
Mar 1, 2025March 2025: Focused on robustness, configurability, and extended pileup/luminosity measurement capabilities in the analysis pipeline. Delivered four core enhancements and fixes that improve data quality, reliability, and deployment flexibility. Key outcomes include: Trigger count enhancements with BCO capture and nbunch counting, safeguards in luminosity calculations to prevent division by zero and invalid prescale usage, improved configuration flexibility for LuminosityCounterGoodRuns analysis script, and refined Treemaking scripts to improve execution context and input/output path handling. These changes reduce runtime errors, improve calculation reliability, and enhance reproducibility and deployment flexibility across workflows.
March 2025
February 2025
19 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for sPHENIX-Collaboration/analysis: Implemented JetBackgroundCut module with configurable vertex-type support, robust vertex data handling, systematic variation framework, and PHParameters integration; stabilized analysis pipeline with targeted fixes for dPhi cut logic and data checks. Added LuminosityCounterGoodRuns module to process DSTs and generate trigger and luminosity statistics, including flexible runlist handling, executable Condor scripts, and documentation; updated cross-section for luminosity calculation. Completed migration to PHParameters (replacing recoConsts) to improve configurability and reproducibility, accompanied by comprehensive documentation updates and usability improvements.
February 2025
19 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for sPHENIX-Collaboration/analysis: Implemented JetBackgroundCut module with configurable vertex-type support, robust vertex data handling, systematic variation framework, and PHParameters integration; stabilized analysis pipeline with targeted fixes for dPhi cut logic and data checks. Added LuminosityCounterGoodRuns module to process DSTs and generate trigger and luminosity statistics, including flexible runlist handling, executable Condor scripts, and documentation; updated cross-section for luminosity calculation. Completed migration to PHParameters (replacing recoConsts) to improve configurability and reproducibility, accompanied by comprehensive documentation updates and usability improvements.
January 2025
7 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for sPHENIX-Collaboration/analysis. Delivered a new Jet Background Cut Analysis Module to improve fake jet rejection, plus robustness improvements to the Jet Background processing pipeline, and fixed a critical Jet ET calculation bug. The work enhances analysis reliability, reduces false positives, and improves maintainability through configuration-driven modules and build scripts.
7 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for sPHENIX-Collaboration/analysis. Delivered a new Jet Background Cut Analysis Module to improve fake jet rejection, plus robustness improvements to the Jet Background processing pipeline, and fixed a critical Jet ET calculation bug. The work enhances analysis reliability, reduces false positives, and improves maintainability through configuration-driven modules and build scripts.
January 2025
Activity
Loading activity data...
Quality Metrics
Correctness83.4%
Maintainability85.4%
Architecture80.8%
Performance76.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
BashC++MarkdownROOTShell
Technical Skills
Batch ProcessingBuild System ConfigurationBuild SystemsC++C++ DevelopmentC++ programmingCode RefactoringConfiguration ManagementData AnalysisData ProcessingData StructuresDebuggingDocumentationError HandlingEvent Processing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline