The function select_h can be now used also for the
normality test. The parameters mu and sigma
are mandatory.
The skewness alternative is no longer supported for
normality tests in select_h and kb.test
functions.
DOCUMENTATION FIXES
The arguments of the class object pk.test have been
renamed to match the terminology in the article by Ding, Markatou,
Saraceno (2025) Statistica Sinica. Un and Vn
statistics are now renamed to Tn and Sn
respectively.
In the functions select_h and kb.test, the
arguments mu_hat and sigma_hat have been
renamed to mu and sigma for consistency.
Examples in the documentation have been changed accordingly.
Code testing has been updated accordingly.
QuadratiK 1.1.4 (2026-01-16)
BUG FIXES
Change computation of the M-step in the pkbc algorithm
to handle larger dimensions
Improve pkbc function for reducing the computational
time required
QuadratiK 1.1.3 (2025-02-04)
NEW FEATURES
the function rpkb() returns directly the generated data set and not
a list.
change repository name from QuadratiK-package to QuadratiK.
MINOR IMPROVEMENTS
packages ggplot2 and foreach not called as full packages but using
importFrom.
nClust argument of pkbc function has no default value.
usage of standardGeneric (see
https://adv-r.hadley.nz/s4.html#s4-generics).
BUG FIXES
goodpractice suggestions.
specify that rho in pk.test() cannot be equal 1.
styling and spelling errors.
DOCUMENTATION FIXES
Uniform notation: d is dimension in Eucldean space with spherical
data lying on the (d-1)-dimensional sphere
Specify dimension of input matrix x in clustering functions.
Improve explanation of Average Silhouette Width.
Better explanation of motivation for L2 normalization in the
wireless data set application.
QuadratiK 1.1.2 (2024-10-29)
NEW FEATURES
Added NEWS.md file.
More detailed information in the README file and documentation
(the methods are more usable and clearer for a broader
audience).
MINOR IMPROVEMENTS
Added badges for rOpenSci review status, test coverage, R CMD CHECK,
CRAN downloads.
Addition of test codes with testthat package.
In particular, testing that random sampling from the PKBD and the
wrapped Cauchy distribution is equivalent.
BUG FIXES
scatter-plots related to the clustering algorithm results.
computation of evaluation measures (pkdc_validation
function) when the true labels are not provided.
DOCUMENTATION FIXES
The help documentation for the methods defined for the classes in
the package can be accessed directly (addition of roxygen tag name and
aliases).
QuadratiK 1.1.1 (2024-06-05)
NEW FEATURES
Improve computation of variance for k-sample test
Add breast_cancer and wine data sets
MINOR IMPROVEMENTS
print() and summary() methods of the
kb.test object for the two and k-sample tests
BUG FIXES
Computation of test statistics for normality test
DOCUMENTATION FIXES
Correction of typos
QuadratiK 1.1.0 (2024-05-14)
NEW FEATURES
Add GitHub links to the DESCRIPTION file
Add unit tests
Add CONTRIBUTING.md
Add srr standards for the categories: General, Clustering and
Probability Distributions
Add methods for the clustering object pkbc:
show(), summary(),
estract_stats(), plot() and
predict()
Add vignette generate_rpkb.Rmd
Add CODE_OF_CONDUCT.md
Create the GitHub page using pkgdown
Add V-statistic for Normality test, with corresponding Critical
Value and Degrees of Freedom with the function
DOF_norm()
Update kb.test S4 class slots, kb.test()
function, unit-test codes, summary() and
print() method for including the V-statistic
Add Trace statistic for two and k-sample tests
Add computation of the Variance for two and k-sample tests
MINOR IMPROVEMENTS
Addition of GitHub workflows for R-CMD-check, test-coverage and
pkgcheck
Update codes to check arguments of function
pk.test()
Update codes to check arguments of function kb.test()
and select_h()
Modify indentation and assignments (using ‘<-’) following
goodpractice standards
Update references in README.md file
BUG FIXES
Add codemeta.json to .Rbuildignore
Add CONTRIBUTING.md to .Rbuildignore
Fix warning from internal function
compare_qq()
Add doc folder to .gitignore
Modify returned test statistics multiplying them by the sample
size
Remove “Nonparam” centering option for the Normality
test
Critical value of the V-statistic divided by the variance in the
function pk.test()
DEPRECATED AND DEFUNCT
summary_stat() and validation()
substituted by estract_stats() and
pkbc_validation()