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Changelog

Source: NEWS.md

fdacluster (development version)

  • Expanded arguments of fdakmeans() to allow for more control over the type of input functional data:
    • is_domain_interval allows one to state the all curves are defined on the same fixed interval;
    • transformation specifies the transformation to be applied to the data before clustering.
    • check_check_option_compatibility() handles errors when incompatible options are selected.
  • Created two separate C++ classes for L2 distance and normalized L2 distance; the former cannot be used in combination with dilation or affine warping classes because it is not invariant to these transformations.
  • Integrated distances in C++ classes are now computed via arma::trapz().
  • Added talk given at Rencontres R 2023 in Avignon, France to the News section of the website.
  • Now uses package distops for computing distance matrices.
  • Reduced number of dependencies: removed dplyr, tidyr, forcats, (progressr, tidyr, furrr, purrr).
  • Updated README file.
  • Updated GHA workflows.
  • Updated vignettes.
  • Bug fixes.

fdacluster 0.3.0

CRAN release: 2023-07-04

  • Added median centroid type;
  • Median and mean centroid types are now defined on the union of individual grids;
  • Simplified caps class to avoid storing objects multiple times under different names;
  • Added vignette on initialization strategies for k-means;
  • Added article on use case about the Berkeley growth study;
  • Added article on supported input formats.

fdacluster 0.2.2

CRAN release: 2023-05-25

  • Make sure one can use fdacluster with namespace notation.
  • Make sure not to use fda or funData before checking it is available.

fdacluster 0.2.1

CRAN release: 2023-05-19

  • Add DBSCAN clustering;
  • Fix C++ compiler issues that errored when accessing empty vectors.

fdacluster 0.2.0

CRAN release: 2023-05-18

  • Add hierarchical clustering;
  • Enforce n_clusters in output via linear programming (LP) using the lpSolve package;
  • New caps class for storing results from functional Clustering with Amplitude and Phase Separation in a consistent way;
  • Add tools for comparing clustering results (mcaps objects, autoplot and plot specialized method implementations);
  • Add seeding strategies for kmeans (via hierarchical clustering or k-means++ or k-means++ with exhaustive search of the first center or exhaustive search of all the centers);
  • Add within-cluster domain auto-extension via mean imputation;
  • Add possibility to cluster according to phase variability instead of amplitude variability.
  • Renaming of functions: to perform k-means with alignment, now use fdakmeans(), to perform HAC with alignment, now use fdahclust().

fdacluster 0.1.1

CRAN release: 2022-05-09

  • Fixed undefined behavior sanitizer issues spotted by UBSAN.
  • Added reference to published work related to the package in DESCRIPTION.

fdacluster 0.1.0

CRAN release: 2022-02-01

  • Initial release.
  • Added a NEWS.md file to track changes to the package.