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polykde 1.0.0

• Initial release.

polykde 1.1.3

• Add cross-validation bandwidths with exact loss for vMF distributions in bw_cv_polysph().
• Add fast_log_c_vMF() as a faster version of rotasym::c_vMF().
• Add exact MISE for vMF distributions.
• Fix error in r-devel-linux-x86_64-fedora-clang reported on 2025-04-15.

polykde 1.1.4

• Add hippocampus dataset to give replicability to García-Portugués and Meilán-Vila (2024) (doi:10.48550/arXiv.2411.04166).

polykde 1.1.7

• Add d_mvmf_polysph() and r_mvmf_polysph() to handle mixtures of vMF distributions on polyspheres.
• Add exact ISE for vMF distributions.
• Expand support of fast_log_c_vMF() to large orders.
• Add Hammer projection convenience hammer_to_sph() and fib_latt().
• Update reference García-Portugués and Meilán-Vila (2025) to the published version.

polykde 1.2.0

• Add arcsinh to bw_cv_polysph() to handle high-dimensional data.
• Move Bessel from Suggests to Imports.
• Fix the Monte Carlo LSCV loss in bw_cv_polysph(exact_vmf = FALSE), which mixed densities with respect to the Lebesgue and uniform measures.
• Extend and speed up the spline approximation of the Bessel functions used by fast_log_c_vMF(): the tabulated orders now reach nu = 24.5, interpolation is done on log(x), small arguments use an exact series, and non-tabulated orders fall back to besselI() instead of erroring.
• Robustify the JSD test in hom_test_polysph() against non-finite values; use the standard permutation p-value (1 + #{T* >= T}) / (B + 1).
• Fix the normalizing constants of the Epanechnikov and softplus product kernels in grad_hess_kde_polysph().
• Fix proj_grad_kde_polysph() with sparse = TRUE, which could request too few eigenvalues for small r.
• Accept a length-r vector kappa for one-component mixtures in d_mvmf_polysph(), r_mvmf_polysph(), and mise_vmf_polysph().
• Restore the user’s random seed on exit whenever seed_mc, seed_psi, or seed_jsd are given.
• Validate inputs in log_cv_kde_polysph(), bw_lcv_min_epa(), and proj_polysph().
• Add a package logo.
• And the reference García-Portugués and Meilán-Vila (2023) (doi:10.1007/978-3-031-32729-2_4) to CITATION.
• Documentation improvements.

polykde 1.2.1

• Unrandomize the tests in tests_bwd.R, tests_distr.R, tests_grad_hess.R, tests_kde.R, tests_samplers.R, and tests_tests.R to avoid spurious failures on some platforms.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.