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feat(hodges): achieve high-parity TRACK implementation and modernize architecture#80

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mwyau merged 13 commits intomainfrom
feat/hodges-parity-refinement
Mar 20, 2026
Merged

feat(hodges): achieve high-parity TRACK implementation and modernize architecture#80
mwyau merged 13 commits intomainfrom
feat/hodges-parity-refinement

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@mwyau mwyau commented Mar 20, 2026

This PR achieves a high-parity implementation of the Hodges (TRACK) algorithm, modernizing the codebase for high-performance climate analysis while strictly adhering to original meteorological standards.

Key Algorithmic Achievements:

  • Object-Based Detection: Implemented a multi-stage pipeline (Thresholding -> CCL -> Object Filtering -> Local Extrema) to eliminate detection noise, matching TRACK's original logic.
  • Recursive MGE Optimization: Replicated TRACK's linking strategy using alternating forward/backward passes with 'one best swap per frame' and recursive convergence.
  • Refined Cost Function: Integrated the critical 0.5 normalization factor for directional smoothness.
  • Physical Constraint Enforcement: Integrated track_fail logic into the MGE loop to prevent trajectories from violating physical displacement limits.
  • Unified Legacy Standards: Centralized all standard TRACK constants ($d_{max}=6.5$, adaptive thresholds) into a dedicated constants.py module, serving as the single point of truth.

Architectural & Engineering Improvements:

  • Organized CLI: Grouped ~20 arguments into logical categories (Required, General, Performance, Hodges-Specific) for a cleaner UX.
  • Robustness: Updated all trackers to handle **kwargs gracefully, allowing seamless parameter passing across different algorithms.
  • Numba Performance: All heavy mathematical loops (CCL, MGE, Geodesics) are implemented as GIL-free JIT kernels.
  • Clean Code: Refactored data utilities (data_utils.py -> data.py) and established repository-wide mandates in GEMINI.md.
  • Exhaustive Documentation: Detailed design rationales and known differences documented in HODGES.md.

Verification:

  • Exhaustive Integration Tests: Verified backend consistency (Serial, Dask, MPI) across all integration tests.
  • CI Stabilization: Temporarily disabled exceptionally slow 'full' vorticity tests (>2m each) to maintain fast feedback loops.

- Implement object-based detection using Connected Component Labeling (CCL).
- Update cost function with 0.5 normalization factor for directional term.
- Refine MGE optimization with alternating forward/backward passes and one best swap per frame.
- Implement track breaking logic for displacement violations.
- Modernize CLI and API with support for regional zones and adaptive smoothness.
- Update documentation with detailed architectural and design reasoning.
- Temporarily disable slow integration tests in CI.
@mwyau mwyau force-pushed the feat/hodges-parity-refinement branch from f28d5da to b662b1e Compare March 20, 2026 15:10
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codecov bot commented Mar 20, 2026

Codecov Report

❌ Patch coverage is 45.06438% with 128 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.26%. Comparing base (be1cc83) to head (15461cc).
⚠️ Report is 14 commits behind head on main.

Files with missing lines Patch % Lines
src/pystormtracker/hodges/kernels.py 4.95% 115 Missing ⚠️
src/pystormtracker/cli.py 84.44% 7 Missing ⚠️
src/pystormtracker/hodges/tracker.py 82.35% 3 Missing ⚠️
src/pystormtracker/simple/concurrent.py 33.33% 2 Missing ⚠️
src/pystormtracker/hodges/detector.py 80.00% 1 Missing ⚠️
Additional details and impacted files

Impacted file tree graph

@@            Coverage Diff             @@
##             main      #80      +/-   ##
==========================================
- Coverage   69.40%   65.26%   -4.15%     
==========================================
  Files          20       21       +1     
  Lines        1739     1857     +118     
==========================================
+ Hits         1207     1212       +5     
- Misses        532      645     +113     
Flag Coverage Δ
integration 57.72% <43.77%> (-3.52%) ⬇️
unit 60.95% <34.33%> (-3.28%) ⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines Coverage Δ
src/pystormtracker/hodges/constants.py 100.00% <100.00%> (ø)
src/pystormtracker/hodges/linker.py 97.45% <100.00%> (+2.41%) ⬆️
src/pystormtracker/models/tracker.py 100.00% <ø> (ø)
src/pystormtracker/simple/detector.py 81.87% <100.00%> (ø)
src/pystormtracker/simple/tracker.py 100.00% <100.00%> (ø)
src/pystormtracker/utils/data.py 86.36% <100.00%> (ø)
src/pystormtracker/hodges/detector.py 93.33% <80.00%> (+0.15%) ⬆️
src/pystormtracker/simple/concurrent.py 53.84% <33.33%> (-0.13%) ⬇️
src/pystormtracker/hodges/tracker.py 73.33% <82.35%> (-18.98%) ⬇️
src/pystormtracker/cli.py 90.52% <84.44%> (-6.40%) ⬇️
... and 1 more

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:
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mwyau added 6 commits March 20, 2026 11:33
- Remove unused data/hodges/*.dat files.
- Rename src/pystormtracker/utils/data_utils.py to data.py.
- Rename GOOD_DATA to CACHED_DATA for better clarity.
- Organize CLI arguments into groups and fix HelpFormatter error.
- Update README with latest Hodges algorithm and CLI info.
- Refine GEMINI.md with concise architectural decisions and standards.
- Ensure README reflects grouped CLI arguments and Hodges algorithm details.
- Standardize argparse usage in cli.py.
- Set default dmax to 6.5 to match TRACK standard.
- Hardcode STANDARD_ZONES and adaptive smoothness thresholds/values in HodgesTracker.
- Remove --zone and --adapt file-loading arguments from CLI for simplicity.
- Ensure 100% parity with legacy TRACK defaults out-of-the-box.
- Centralize TRACK defaults in constants.py.
- HodgesTracker is now the single source of truth for standard constraints.
- Simplified CLI by removing redundant file-loading arguments.
- Standardized thresholds (1.0e-5 for vo, 0.0 for msl) across detectors.
- Updated GEMINI.md with consolidated architectural mandates.
- Fixed unit tests and mypy typing issues.
@mwyau mwyau changed the title feat(hodges): refine algorithm towards parity with original TRACK feat(hodges): refine algorithm for TRACK parity and modernize CLI/API Mar 20, 2026
mwyau added 3 commits March 20, 2026 12:43
- Update GEMINI.md, HODGES.md, and README.md with guidelines to maintain historical design rationale.
- Finalize documentation for Hodges parity refinement PR.
- Consolidate TRACK defaults in constants.py and import as module.
- Simplified HodgesLinker __init__ and unit tests by using centralized constants.
- Verified all trackers and linkers with comprehensive unit and integration tests.
- Maintain single point of truth for algorithmic constants.
@mwyau mwyau changed the title feat(hodges): refine algorithm for TRACK parity and modernize CLI/API feat(hodges): achieve high-parity TRACK implementation and modernize architecture Mar 20, 2026
@mwyau mwyau marked this pull request as ready for review March 20, 2026 17:44
@mwyau mwyau merged commit 3d717b6 into main Mar 20, 2026
12 checks passed
@mwyau mwyau deleted the feat/hodges-parity-refinement branch March 20, 2026 17:51
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