spd_learn.functional.pcm_inv_coords#
- spd_learn.functional.pcm_inv_coords(Z: Tensor, theta: float = 0.5, eps: float = 1e-06) Tensor[source]#
Reconstruct SPD matrix from deformed Power-Cholesky coordinates.
- Parameters:
Z (torch.Tensor) – Deformed coordinates of shape (…, n, n).
theta (float, default=0.5) – Power deformation parameter (\(\theta \neq 0\)).
eps (float, default=1e-6) – Numerical floor for clamping before power.
- Returns:
Reconstructed SPD matrix of shape (…, n, n).
- Return type: