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riemtan  

Riemannian Metrics for Symmetric Positive Definite Matrices
View on CRAN: Click here


Download and install riemtan package within the R console
Install from CRAN:
install.packages("riemtan")

Install from Github:
library("remotes")
install_github("cran/riemtan")

Install by package version:
library("remotes")
install_version("riemtan", "0.1.0")



Attach the package and use:
library("riemtan")
Maintained by
Nicolas Escobar
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2025-04-23
Latest Update: 2025-04-23
Description:
Implements various Riemannian metrics for symmetric positive definite matrices, including AIRM (Affine Invariant Riemannian Metric, see Pennec, Fillard, and Ayache (2006) <doi:10.1007/s11263-005-3222-z>), Log-Euclidean (see Arsigny, Fillard, Pennec, and Ayache (2006) <doi:10.1002/mrm.20965>), Euclidean, Log-Cholesky (see Lin (2019) <doi:10.1137/18M1221084>), and Bures-Wasserstein metrics (see Bhatia, Jain, and Lim (2019) <doi:10.1016/j.exmath.2018.01.002>). Provides functions for computing logarithmic and exponential maps, vectorization, and statistical operations on the manifold of positive definite matrices.
How to cite:
Nicolas Escobar (2025). riemtan: Riemannian Metrics for Symmetric Positive Definite Matrices. R package version 0.1.0, https://cran.r-project.org/web/packages/riemtan. Accessed 08 May. 2025.
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