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.
Version: 0.1.0 Depends: R (≥ 4.3.0), Matrix Imports: methods, expm, R6, purrr, MASS, furrr Suggests: testthat (≥ 3.0.0), knitr, rmarkdown Published: 2025-04-23 DOI: 10.32614/CRAN.package.riemtan Author: Nicolas Escobar [aut, cre], Jaroslaw Harezlak [ths] Maintainer: Nicolas Escobar <nescoba at iu.edu> BugReports: https://github.com/nicoesve/riemtan/issues License: MIT + file LICENSE URL: https://nicoesve.github.io/riemtan/ NeedsCompilation: no Materials: README, NEWS CRAN checks: riemtan results Documentation: Downloads: Linking:Please use the canonical form https://CRAN.R-project.org/package=riemtan to link to this page.
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