SPD manifold is a well-studied space in that there have been many geometries
proposed on the space. For special functions on under SPD category, this
function finds whether there exists a matching name that is currently
supported in Riemann. If there is none, it will return an error message.
Arguments
- geometry
name of supported geometries, including
- AIRM
Affine-Invariant Riemannian Metric.
- LERM
Log-Euclidean Riemannian Metric.
- Jeffrey
Jeffrey's divergence.
- Stein
Stein's metric.
- Wasserstein
2-Wasserstein geometry.
Value
a matching name in lower-case.
Examples
# it just returns a small-letter string.
mygeom = spd.geometry("stein")
