# --------------------------------------------
# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "densityratio" in publications use:'
type: software
license: GPL-3.0-or-later
title: 'densityratio: Distribution Comparison Through Density Ratio Estimation'
version: 0.2.2
doi: 10.5281/zenodo.13881689
identifiers:
- type: doi
  value: 10.32614/CRAN.package.densityratio
abstract: Fast, flexible and user-friendly tools for distribution comparison through
  direct density ratio estimation. The estimated density ratio can be used for covariate
  shift adjustment, outlier-detection, change-point detection, classification and
  evaluation of synthetic data quality. The package implements multiple non-parametric
  estimation techniques (unconstrained least-squares importance fitting, ulsif(),
  Kullback-Leibler importance estimation procedure, kliep(), spectral density ratio
  estimation, spectral(), kernel mean matching, kmm(), and least-squares hetero-distributional
  subspace search, lhss()). with automatic tuning of hyperparameters. Helper functions
  are available for two-sample testing and visualizing the density ratios. For an
  overview on density ratio estimation, see Sugiyama et al. (2012) <https://doi.org/10.1017/CBO9781139035613>
  for a general overview, and the help files for references on the specific estimation
  techniques.
authors:
- family-names: Volker
  given-names: Thom
  email: thombenjaminvolker@gmail.com
  orcid: https://orcid.org/0000-0002-2408-7820
preferred-citation:
  type: generic
  title: 'densityratio: Distribution comparison through density ratio estimation'
  authors:
  - family-names: Volker
    given-names: Thom Benjamin
    email: thombenjaminvolker@gmail.com
    orcid: https://orcid.org/0000-0002-2408-7820
  - family-names: Gonzalez Poses
    given-names: Carlos
  - family-names: Kesteren
    given-names: Erik-Jan
    name-particle: van
  version: 0.0.1
  year: '2024'
  url: https://github.com/thomvolker/densityratio
  doi: 10.5281/zenodo.13881689
repository: https://cran.r-universe.dev
repository-code: https://github.com/thomvolker/densityratio
commit: c3b704d3a4068e5096a2ebd3c13944f9b1d116ef
url: https://thomvolker.github.io/densityratio/
date-released: '2025-07-18'
contact:
- family-names: Volker
  given-names: Thom
  email: thombenjaminvolker@gmail.com
  orcid: https://orcid.org/0000-0002-2408-7820