mwinter/compact_sets
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8 commits

Author SHA1 Message Date
Michael Winter ebbb288844 Implement weighted contrary motion factor 
- Half of moving voices should go one direction, half opposite
- Weighted by closeness to ideal half split
- factor = 1.0 - (distance_from_half / half)
- Works with odd (near-half) and even (exact half) voices
- Analysis shows contrary_motion_steps, percent, and avg_score
 2026-03-15 11:31:24 +01:00
Michael Winter 559c868313 Fix Hamiltonian analysis and add DCA stay count metrics 
- Save graph_path to output for accurate Hamiltonian tracking
- DCA analysis now shows avg/max voice stay counts
- Fix: use actual graph node hashes instead of rehashing transposed chords
 2026-03-15 11:13:24 +01:00
Michael Winter 0dbdfe02cb Start target range from first chord average 
- Target now begins at average cents of starting chord
- Progress adds target_octaves on top of starting position
- More accurate register targeting
 2026-03-14 03:24:04 +01:00
Michael Winter cc3c1ab971 Use average cents for target range tracking 
- Replace cumulative_trans with average cents of actual chord
- More accurate register targeting using current chord position
- Test with max_path=150 shows reaching ~400 Hz target (2 octaves)
 2026-03-14 03:09:46 +01:00
Michael Winter 2fe8737cfe Improve target range factor with relative distance 
- Replace harsh 1/(1+distance) with bounded relative scoring
- Factor > 1.0 when moving toward target, < 1.0 when moving away
- Minimum factor 0.1 to avoid zero weights
- Test with max_path=150 shows reaching ~90% of 2-octave target
 2026-03-14 03:05:23 +01:00
Michael Winter 737f1e4886 Refactor edge weights with DCA and CLI improvements 
- Implement DCA (Dissonant Counterpoint Algorithm) to favor voice changes
- Track actual pitch changes in voice_stay_count (not graph indices)
- Add CLI weight arguments: --weight-melodic, --weight-contrary-motion,
  --weight-hamiltonian, --weight-dca, --weight-target-range
- DCA probability = (sum of stay_counts for changing voices) / (sum of all)
- Test with --weight-dca 100 shows frequent voice changes
 2026-03-14 02:44:30 +01:00
Michael Winter 61149597c9 Add target range weight for rising register 
- Add --target-range CLI option (in octaves)
- Implement target_range weight in PathFinder
- Add test for target range weight
- Add --max-path to README
 2026-03-13 22:04:48 +01:00
Michael Winter 0698d01d85 Refactor into src/ module with caching and CLI improvements 
- Split monolithic compact_sets.py into modular src/ directory
- Add graph caching (pickle + JSON) with --cache-dir option
- Add --output-dir, --rebuild-cache, --no-cache CLI options
- Default seed is now None (random) instead of 42
- Add .gitignore entries for cache/ and output/
 2026-03-13 18:38:38 +01:00