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Angular-aware phi reparameterization for improved Rips geometry#11

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Apprentice2907 wants to merge 1 commit intoML4SCI:mainfrom
Apprentice2907:fix-angular-phi-geometry
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Angular-aware phi reparameterization for improved Rips geometry#11
Apprentice2907 wants to merge 1 commit intoML4SCI:mainfrom
Apprentice2907:fix-angular-phi-geometry

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Motivation

Angular coordinates (φ) are periodic, but were previously treated as linear features during simplicial complex construction. This introduces artificial discontinuities and degrades angular distribution fidelity.

Changes

  • Reparameterized φ as (sinφ, cosφ) during coordinate extraction
  • Normalized coordinate scales prior to Vietoris–Rips complex construction
  • Kept model architecture and training pipeline unchanged

Results

This preserves circular topology in the input geometry and improves downstream angular distribution consistency (lower Wasserstein / KL divergence for φ).

Notes

The change is minimal, backward-compatible, and targets the geometric source of the angular bottleneck described in Issue #10.

Closes #10

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Spatial Distribution Bottleneck: η and φ Loss Transformations

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