hael/SIMPLE
Nov 2024 – Dec 2025
13 Months active
Languages Used
BashFortranCMake
Technical Skills
3D ReconstructionBug FixBug FixingCode CleanupCode RefactoringCoordinate Systems
cong
PROFILE
Cong
Vance contributed to the hael/SIMPLE repository by engineering advanced 3D reconstruction and image processing workflows, focusing on robust polar-coordinate pipelines and distributed computation. He implemented features such as missing-view handling, multi-file docking with transformation persistence, and production-ready polar Fourier interpolation, using Fortran and Bash for high-performance scientific computing. His work included refactoring core modules for maintainability, expanding unit testing for regression protection, and optimizing parallel processing with OpenMP. By addressing complex algorithmic challenges in data analysis and numerical methods, Vance improved model accuracy, reproducibility, and workflow scalability, demonstrating depth in both algorithm development and practical software engineering for computational science.
Overall Statistics
Feature vs Bugs
65%Features
Repository Contributions
311Total
Bugs
50
Commits
311
Features
93
Lines of code
29,807
Activity Months13
Your Network
46 peopleSame Organization
@nih.gov28
Shared Repositories
18
afanoaMember
AtifMember
CaesarMember
CaesarMember
CaesarMember
CaesarMember
CaesarMember
CaesarMember
cyrilrMember
Work History
December 2025
4 Commits • 3 Features
Dec 1, 2025December 2025 (hae/SIMPLE) monthly summary focused on polar-processing enhancements, performance improvements, and bug fixes aimed at stabilizing polar-coordinate workflows for image processing. Delivered production-ready polar-processing capabilities with refactors and new APIs, accompanied by a targeted bug fix to ensure reliable interpolation in polar Fourier transforms.
4 Commits • 3 Features
Dec 1, 2025December 2025 (hae/SIMPLE) monthly summary focused on polar-processing enhancements, performance improvements, and bug fixes aimed at stabilizing polar-coordinate workflows for image processing. Delivered production-ready polar-processing capabilities with refactors and new APIs, accompanied by a targeted bug fix to ensure reliable interpolation in polar Fourier transforms.
December 2025
November 2025
13 Commits • 5 Features
Nov 1, 2025November 2025: Delivered major enhancements to SIMPLE docking, crystal scoring accuracy, and 3D/polar processing. Implemented multi-file docking input with rotation/translation persistence, enhanced crystal scoring pipeline with nanoparticle simulation, and cleaned up polar calculations. Strengthened input validation for Gaussian regularization and icm toggling. Completed code and test cleanup to improve maintainability and build health. These changes collectively boost docking accuracy, scoring reliability, and developer productivity, reducing manual intervention and enabling more scalable nanoparticle docking workflows.
November 2025
13 Commits • 5 Features
Nov 1, 2025November 2025: Delivered major enhancements to SIMPLE docking, crystal scoring accuracy, and 3D/polar processing. Implemented multi-file docking input with rotation/translation persistence, enhanced crystal scoring pipeline with nanoparticle simulation, and cleaned up polar calculations. Strengthened input validation for Gaussian regularization and icm toggling. Completed code and test cleanup to improve maintainability and build health. These changes collectively boost docking accuracy, scoring reliability, and developer productivity, reducing manual intervention and enabling more scalable nanoparticle docking workflows.
September 2025
12 Commits • 2 Features
Sep 1, 20252025-09 Monthly summary for hael/SIMPLE: Delivered major features and robustness improvements across FSC/FRC analysis, sigma handling in distributed processing, and nanoparticle/atom registration tooling. Key features delivered include a dedicated FSC/FRC analysis CLI commander, support for nonuniform FRC testing, and core processing refactors that enhance analysis quality and output handling. Major bugs fixed include restoring accurate sigma calculations in distributed ab initio/polar workflows and reverting unintended conditional changes that affected polar/refinement flags, resulting in improved accuracy and consistency. Added nanoparticle registration tooling with mirrored-position testing and a new atom registration commander, plus UI/test enhancements for registration workflows. Overall impact: shortened analysis cycles, more reliable and reproducible outputs, and expanded tooling to support registration workflows, increasing business value and confidence in results. Technologies/skills demonstrated: Python tooling and CLI design, distributed processing considerations, testing automation and coverage (mirrored positions), UI/test enhancements, and code quality improvements through refactors.
12 Commits • 2 Features
Sep 1, 20252025-09 Monthly summary for hael/SIMPLE: Delivered major features and robustness improvements across FSC/FRC analysis, sigma handling in distributed processing, and nanoparticle/atom registration tooling. Key features delivered include a dedicated FSC/FRC analysis CLI commander, support for nonuniform FRC testing, and core processing refactors that enhance analysis quality and output handling. Major bugs fixed include restoring accurate sigma calculations in distributed ab initio/polar workflows and reverting unintended conditional changes that affected polar/refinement flags, resulting in improved accuracy and consistency. Added nanoparticle registration tooling with mirrored-position testing and a new atom registration commander, plus UI/test enhancements for registration workflows. Overall impact: shortened analysis cycles, more reliable and reproducible outputs, and expanded tooling to support registration workflows, increasing business value and confidence in results. Technologies/skills demonstrated: Python tooling and CLI design, distributed processing considerations, testing automation and coverage (mirrored positions), UI/test enhancements, and code quality improvements through refactors.
September 2025
August 2025
24 Commits • 6 Features
Aug 1, 2025During August 2025, the SIMPLE repository hael/SIMPLE progressed core 3D reconstruction capabilities, volume handling for CLI workflows, and overall pipeline stability. Delivered missing-view support and mirroring to enable reconstruction with incomplete viewsets, while adding postprocess CLI volume input and testing references. Stabilized 2D/3D workflows via benchmarking/polar-ops fixes and targeted refactors, and resolved distributed refine3D with comlin interaction and probability calculation issues. Enhanced shift computation with unit tests and stability improvements, including in-plane rotation and CTF handling. These changes increase model completeness in challenging datasets, reduce pipeline failures, and improve automation and maintainability.
August 2025
24 Commits • 6 Features
Aug 1, 2025During August 2025, the SIMPLE repository hael/SIMPLE progressed core 3D reconstruction capabilities, volume handling for CLI workflows, and overall pipeline stability. Delivered missing-view support and mirroring to enable reconstruction with incomplete viewsets, while adding postprocess CLI volume input and testing references. Stabilized 2D/3D workflows via benchmarking/polar-ops fixes and targeted refactors, and resolved distributed refine3D with comlin interaction and probability calculation issues. Enhanced shift computation with unit tests and stability improvements, including in-plane rotation and CTF handling. These changes increase model completeness in challenging datasets, reduce pipeline failures, and improve automation and maintainability.
July 2025
27 Commits • 10 Features
Jul 1, 2025July 2025 saw hael/SIMPLE deliver a major upgrade to polar comlin support in refine3D, with refactoring, single-pass generation, and validation on exp_gate data. The work included distributed generation of polar comlin lines, a shifting strategy to improve throughput, and clin-focused performance enhancements. A broad set of bug fixes stabilized the polar/clin workflow, improved final volume assembly when volrec is disabled, and hardened project-file handling and gauref usage. Additional features provide better control and visibility, including ignoring common lines from neighborhood planes, adjustable frc filtering, 0/1 cavgs exclusion in FRC pushes, and probability-mode support for polar/clin. These efforts collectively increase accuracy, reliability, and throughput, delivering measurable business value and demonstrating strong skills in refactoring, testing, and performance optimization.
27 Commits • 10 Features
Jul 1, 2025July 2025 saw hael/SIMPLE deliver a major upgrade to polar comlin support in refine3D, with refactoring, single-pass generation, and validation on exp_gate data. The work included distributed generation of polar comlin lines, a shifting strategy to improve throughput, and clin-focused performance enhancements. A broad set of bug fixes stabilized the polar/clin workflow, improved final volume assembly when volrec is disabled, and hardened project-file handling and gauref usage. Additional features provide better control and visibility, including ignoring common lines from neighborhood planes, adjustable frc filtering, 0/1 cavgs exclusion in FRC pushes, and probability-mode support for polar/clin. These efforts collectively increase accuracy, reliability, and throughput, delivering measurable business value and demonstrating strong skills in refactoring, testing, and performance optimization.
July 2025
June 2025
45 Commits • 9 Features
Jun 1, 2025June 2025 monthly summary for hael/SIMPLE with a focus on delivering performance, robustness, and scalable workflow capabilities. Business value is realized through faster feature delivery, more robust 3D polar pipelines, and enhanced testing to reduce regression risk across complex geometry modules.
June 2025
45 Commits • 9 Features
Jun 1, 2025June 2025 monthly summary for hael/SIMPLE with a focus on delivering performance, robustness, and scalable workflow capabilities. Business value is realized through faster feature delivery, more robust 3D polar pipelines, and enhanced testing to reduce regression risk across complex geometry modules.
May 2025
29 Commits • 7 Features
May 1, 2025May 2025 highlights for hael/SIMPLE: Delivered stability and new capabilities across eul_prob_tab, cluster2D_polar, and in-plane rotation workflows, with a strong focus on reliability, testing, and enabling ab initio workflows with simulated ribos. Key outcomes include robust bug fixes in eul_prob_tab related to shared-memory multistate and empty cavg handling, refactor for maintainability, added polar cavgs capability and integration with updated eul_prob_tab, and comprehensive unit tests for common line metrics and comlin. The team also implemented polar-line guided search groundwork and prepared for production use of polar-line shifts, while minor fixes improved stability in cluster2D_polar and white-noised volumes. The combined impact improves model accuracy, reduces regression risk, and enables broader use-cases with better performance.
29 Commits • 7 Features
May 1, 2025May 2025 highlights for hael/SIMPLE: Delivered stability and new capabilities across eul_prob_tab, cluster2D_polar, and in-plane rotation workflows, with a strong focus on reliability, testing, and enabling ab initio workflows with simulated ribos. Key outcomes include robust bug fixes in eul_prob_tab related to shared-memory multistate and empty cavg handling, refactor for maintainability, added polar cavgs capability and integration with updated eul_prob_tab, and comprehensive unit tests for common line metrics and comlin. The team also implemented polar-line guided search groundwork and prepared for production use of polar-line shifts, while minor fixes improved stability in cluster2D_polar and white-noised volumes. The combined impact improves model accuracy, reduces regression risk, and enables broader use-cases with better performance.
May 2025
April 2025
37 Commits • 10 Features
Apr 1, 2025April 2025 monthly summary for hael/SIMPLE: Delivered key feature work and stability improvements across nmultinomial, KPCA, polar computations, and cluster2D_polar, with a strong emphasis on test coverage, memory safety, and performance. Highlights include: (1) Nmultinomial enhancements with sampling support and unit tests, including updates to test_class_sampler; (2) KPCA stabilization returning to a robust version with tests for pre-norm/no kernel centering; (3) Polar reliability improvements through memory-leak fixes and expanded polar average/cavg testing; (4) SubstantialCluster2D_polar progress, including a shared-memory implementation, shift handling fixes, parity/frc filtering, and validation against cartesian references, plus 3D rank cavgs support; (5) Code quality improvements and targeted bug fix work (e.g., Afan thread issue) to improve maintainability and stability. Overall, these efforts reduce risk, improve reproducibility, and enable more scalable experimentation and deployment.
April 2025
37 Commits • 10 Features
Apr 1, 2025April 2025 monthly summary for hael/SIMPLE: Delivered key feature work and stability improvements across nmultinomial, KPCA, polar computations, and cluster2D_polar, with a strong emphasis on test coverage, memory safety, and performance. Highlights include: (1) Nmultinomial enhancements with sampling support and unit tests, including updates to test_class_sampler; (2) KPCA stabilization returning to a robust version with tests for pre-norm/no kernel centering; (3) Polar reliability improvements through memory-leak fixes and expanded polar average/cavg testing; (4) SubstantialCluster2D_polar progress, including a shared-memory implementation, shift handling fixes, parity/frc filtering, and validation against cartesian references, plus 3D rank cavgs support; (5) Code quality improvements and targeted bug fix work (e.g., Afan thread issue) to improve maintainability and stability. Overall, these efforts reduce risk, improve reproducibility, and enable more scalable experimentation and deployment.
March 2025
18 Commits • 6 Features
Mar 1, 2025Monthly Summary for 2025-03 (hael/SIMPLE). This release focuses on reliability, performance, and accuracy across core data processing and visualization pipelines, with robust testing, enhanced denoising workflows, and parallelized computational steps to accelerate throughput. Key outcomes include improved core finder robustness across diverse datasets, fixes to distribution cluster testing to ensure accurate midpoints, expanded crystal score and particle center testing with KS-style comparisons, and a set of workflow refinements that preserve image orientation and output integrity for downstream analyses.
18 Commits • 6 Features
Mar 1, 2025Monthly Summary for 2025-03 (hael/SIMPLE). This release focuses on reliability, performance, and accuracy across core data processing and visualization pipelines, with robust testing, enhanced denoising workflows, and parallelized computational steps to accelerate throughput. Key outcomes include improved core finder robustness across diverse datasets, fixes to distribution cluster testing to ensure accurate midpoints, expanded crystal score and particle center testing with KS-style comparisons, and a set of workflow refinements that preserve image orientation and output integrity for downstream analyses.
March 2025
February 2025
31 Commits • 9 Features
Feb 1, 2025February 2025 (2025-02) monthly summary for hael/SIMPLE. This period delivered targeted performance gains, stability improvements, and feature work across linstates, 2D delinearization, and atom-position tooling, aligning with the project’s reliability and analytics objectives.
February 2025
31 Commits • 9 Features
Feb 1, 2025February 2025 (2025-02) monthly summary for hael/SIMPLE. This period delivered targeted performance gains, stability improvements, and feature work across linstates, 2D delinearization, and atom-position tooling, aligning with the project’s reliability and analytics objectives.
January 2025
31 Commits • 13 Features
Jan 1, 2025January 2025 (2025-01) — Focused on performance, stability, and modeling capabilities for hael/SIMPLE. Delivered a set of core improvements including a runtime performance boost via caching calc_athres in eul_prob_tab, and substantive KPCA enhancements with bug fixes for class averaging when inputs are not rotated/shifted, enabling more accurate PCA-based denoising and volume variability analysis. Expanded multi-reference support with gencorrs and tests, plus integration of multi-reference shifting into polarft_corrcalc and alignment strategies, expanding the scope of multi-reference workflows. Strengthened testing infrastructure and PCA-related unit tests, improving regression coverage and memory/performance validation. Implemented housekeeping fixes to ensure reliable latest-push builds. Overall impact: faster analyses, more robust PCA workflows, and a solid base for scalable multi-reference processing.
31 Commits • 13 Features
Jan 1, 2025January 2025 (2025-01) — Focused on performance, stability, and modeling capabilities for hael/SIMPLE. Delivered a set of core improvements including a runtime performance boost via caching calc_athres in eul_prob_tab, and substantive KPCA enhancements with bug fixes for class averaging when inputs are not rotated/shifted, enabling more accurate PCA-based denoising and volume variability analysis. Expanded multi-reference support with gencorrs and tests, plus integration of multi-reference shifting into polarft_corrcalc and alignment strategies, expanding the scope of multi-reference workflows. Strengthened testing infrastructure and PCA-related unit tests, improving regression coverage and memory/performance validation. Implemented housekeeping fixes to ensure reliable latest-push builds. Overall impact: faster analyses, more robust PCA workflows, and a solid base for scalable multi-reference processing.
January 2025
December 2024
28 Commits • 8 Features
Dec 1, 2024December 2024 – hael/SIMPLE: Focused on stabilizing core flows after the latest push, advancing polar/common lines work, and strengthening probabilistic state modeling. Key features delivered include unit tests for Cartesian common lines, progress on polar common lines, and initial prob_state work with critical bug fixes. Bug fixes spanned prob_state, trail_rec, build/test GUI, and docking mode, reducing release risk and improving numerical robustness. Overall impact: more reliable experiments, faster iteration cycles, and clearer pathways for upcoming releases. Technologies/skills demonstrated: unit testing, refactoring, build-system adjustments (CMake), Fortran-related stability, and code hygiene.
December 2024
28 Commits • 8 Features
Dec 1, 2024December 2024 – hael/SIMPLE: Focused on stabilizing core flows after the latest push, advancing polar/common lines work, and strengthening probabilistic state modeling. Key features delivered include unit tests for Cartesian common lines, progress on polar common lines, and initial prob_state work with critical bug fixes. Bug fixes spanned prob_state, trail_rec, build/test GUI, and docking mode, reducing release risk and improving numerical robustness. Overall impact: more reliable experiments, faster iteration cycles, and clearer pathways for upcoming releases. Technologies/skills demonstrated: unit testing, refactoring, build-system adjustments (CMake), Fortran-related stability, and code hygiene.
November 2024
12 Commits • 5 Features
Nov 1, 2024November 2024 monthly summary for hael/SIMPLE: Focused on robustness, accuracy, and maintainability across multi-projection workflows. Delivered feature enhancements for class-weighted FRC, refactored reprojection framework, robust testing, and polar data processing, while fixing core processing bugs and cleaning up legacy scripts. These efforts improved metric accuracy, reproducibility, and developer productivity, delivering clear business value in model reliability and data insights.
12 Commits • 5 Features
Nov 1, 2024November 2024 monthly summary for hael/SIMPLE: Focused on robustness, accuracy, and maintainability across multi-projection workflows. Delivered feature enhancements for class-weighted FRC, refactored reprojection framework, robust testing, and polar data processing, while fixing core processing bugs and cleaning up legacy scripts. These efforts improved metric accuracy, reproducibility, and developer productivity, delivering clear business value in model reliability and data insights.
November 2024
Activity
Loading activity data...
Quality Metrics
Correctness82.0%
Maintainability81.4%
Architecture77.2%
Performance69.6%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashCMakeFortran
Technical Skills
3D Graphics3D ReconstructionAb Initio MethodsAlgorithm DevelopmentAlgorithm ImplementationAlgorithm OptimizationAlgorithm RefactoringAlgorithm RefinementBenchmarkingBioinformaticsBug FixBug FixesBug FixingBuild SystemBuild System Configuration
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline